Key Takeaways

• Formula 707 pellets contain very little moisture, making them significantly more stable than powder or liquid supplements during storage
• Proper storage means keeping containers tightly sealed in temperatures between 50-70°F with humidity below 50%, though pellets tolerate brief temperature fluctuations better than other forms
• Signs of degradation include clumping, color changes, rancid odor, or mold growth—fresh Formula 707 pellets should be uniform, dry, and odorless
• The pelleting process involves steam treatment that reduces bacterial and fungal contaminants while creating a protective structure around vitamins and minerals
• Bulk purchasing is more cost-effective with pelleted supplements because their longer shelf life (4-6 months when properly stored) reduces waste compared to powders that degrade faster

Formula 707 pellets maintain potency longer than powder or liquid supplements because their low-moisture formulation and protective pellet structure shield vitamins from degradation caused by air, light, and humidity. The pelleting process creates a compressed form that resists environmental stress, making these supplements forgiving for horse owners who don’t have climate-controlled feed rooms.

Why Pellet Form Matters for Supplement Stability

The physical form of your horse’s supplements directly impacts how long they remain effective. Formula 707’s pellet formulation offers distinct storage advantages over loose powders or liquid supplements, particularly for barn environments where temperature and humidity fluctuate.

According to Kentucky Performance Products, powders and pellets are more stable than pastes and liquids, which can lose potency when exposed to extreme temperatures^[1]. Paste and liquid supplements face molecular structure changes when frozen and can melt or leak in high heat^[1]. Formula 707’s pellet design sidesteps these vulnerabilities.

The pelleting process compresses ground ingredients under heat and pressure, significantly reducing moisture content compared to loose powders. Pelleted feeds contain very little moisture and have a longer shelf life than textured feeds, remaining essentially dust-free and relatively free of bacterial and fungal contaminants due to steam treatment during manufacturing^[2].

How Pelleting Protects Active Ingredients

During manufacture, Formula 707 ingredients are ground into fine particles, mixed, steam-heated, and pressed through dies to form pellets^[2]. This process creates several protective effects:

The steam treatment eliminates bacterial and fungal contaminants that could accelerate degradation^[2]. The compression creates a dense structure that limits oxygen exposure to interior nutrients. The uniform pellet coating acts as a moisture barrier, protecting vitamins from humidity-driven breakdown.

Formula 707’s NASC Quality Seal certification ensures consistent manufacturing standards that maintain these protective properties across every batch^[3]. NASC-certified companies must pass independent third-party audits every two years and demonstrate ongoing compliance with quality control measures^[3].

Temperature and Humidity: What Really Affects Vitamin Potency

Understanding the environmental thresholds for supplement degradation helps you make informed storage decisions. While manufacturers recommend “cool, dry” storage, knowing the specific parameters reveals how much flexibility you actually have.

“Cool and dry” conditions are defined as temperatures between 50-70°F with humidity levels of 40-50%^[1]. Most importantly, supplements must be kept out of direct sunlight and sealed tightly^[1]. The plastic liner inside Formula 707 containers should be resealed before closing the lid^[1].

While temperature alone would need to reach 120°F before rapid vitamin degradation occurs, moisture, oxygen, and light work synergistically to accelerate oxidation at much lower temperatures^[4]. This is why proper container sealing matters as much as temperature control—vitamins can degrade faster at lower temperatures when exposed to humidity and air than heat alone would suggest^[4].

Vitamin Stability Science: What Degrades and Why

Different vitamins in Formula 707 have varying sensitivities to environmental stress. Fat-soluble vitamins (A, D, E, K) are particularly vulnerable to oxidation when exposed to heat, light, or oxygen^[5]. Water-soluble B vitamins can change their molecular structure under adverse conditions, reducing their biological activity^[4].

Research on vitamin stability in feed supplements shows that vitamin A degradation follows first-order kinetics and is highly temperature-dependent^[5]. In one study, vitamin A content decreased from initial levels to approximately 80% after several months at elevated temperatures^[6]. However, pelleted formulations showed better retention than loose powders under identical conditions.

The pelleting process itself provides protection. While some heat-sensitive ingredients can be affected during manufacturing, Formula 707’s steam treatment is carefully controlled to balance pellet formation with nutrient preservation^[2]. The resulting pellets then protect interior nutrients from ongoing environmental exposure during storage.

Comparing Storage Requirements: Pellets vs Powders vs Liquids

Horse owners often wonder whether choosing pellets over powders or liquids makes a practical difference in daily barn management. The answer becomes clear when examining how each form responds to typical feed room conditions.

Powdered supplements, while often economical, face several storage challenges. They’re hydroscopic, meaning they pull moisture from the air^[1]. In humid climates, this leads to clumping that makes accurate dosing difficult. Powders also create dust that can settle on barn surfaces and potentially irritate respiratory systems.

Liquid supplements require the most stringent storage conditions. They cannot be exposed to air for extended periods before feeding, as oxidation rapidly degrades potency^[1]. Products like water-soluble vitamin E lose effectiveness if mixed into feed more than an hour before consumption^[7]. Freezing temperatures can alter liquid molecular structure to the point where products become unusable^[1].

Paste supplements offer convenience for single-use situations but have similar temperature sensitivity to liquids. Extreme hot temperatures can cause pastes to melt and leak, while freezing cold alters their molecular structure^[1]. This makes paste storage problematic in unheated tack rooms or vehicles during seasonal temperature extremes.

Formula 707 pellets occupy the middle ground of stability. They’re not as moisture-proof as individually sealed packets but far more resilient than bulk powders. A properly sealed container of Formula 707 pellets can withstand brief temperature spikes, moderate humidity, and the daily opening-closing cycle of barn feeding routines without significant nutrient loss.

Real-World Storage Scenarios: Feed Rooms, Tack Boxes, and Vehicles

Ideal storage conditions aren’t always available at every barn. Understanding how Formula 707 pellets perform in common real-world situations helps you optimize what you have rather than worry about what you don’t.

In unheated feed rooms, winter temperatures can drop below 50°F without compromising pellet stability. Freezing will not alter the molecular structure of powdered or pelleted supplements^[1], unlike liquids and pastes. The main winter concern is preventing moisture from snow or condensation, which sealed containers easily address.

Summer heat poses more challenges but remains manageable. Feed rooms that reach 90°F during afternoon heat waves won’t immediately destroy Formula 707 potency. Short periods of high heat (several hours) will not negatively affect powdered or pelleted supplements^[1]. The key is avoiding sustained exposure above 85°F combined with high humidity.

For horse owners who keep supplements in their vehicles or tack boxes for shows, Formula 707 pellets offer better temperature tolerance than liquid products. However, you should still transfer small weekly portions to airtight containers rather than leaving entire buckets in hot vehicles for extended periods^[9].

Moisture Management: The Critical Factor

Across all storage scenarios, moisture control matters more than precise temperature maintenance. Moisture causes mold, degrades pellet quality, causes clumping, and reduces nutrient value^[1]. Even at ideal temperatures, high humidity will compromise supplements faster than moderate heat alone.

If your Formula 707 container includes a desiccant packet, leave it in the bucket^[1]. These packets absorb ambient moisture and should remain with the product throughout its use. The plastic liner inside the container serves as a moisture barrier; always reseal it before replacing the lid^[1].

In especially humid climates or during wet seasons, consider these additional moisture protection strategies: Store containers on pallets or shelves rather than directly on concrete floors where condensation can form. Keep buckets in the driest available room, even if that means storing supplements separately from feed. Purchase smaller containers (25 lbs vs 50 lbs) that you’ll finish within 60-90 days during humid months^[9].

Recognizing Signs of Degradation: When to Discard Formula 707

Even with proper storage, knowing when supplements have degraded beyond effectiveness protects your horse from consuming compromised products. Fresh Formula 707 pellets have specific characteristics that change when storage conditions fail.

Fresh Formula 707 pellets should be uniform in color, dry to the touch, and have little to no odor. Any deviation from these baseline characteristics warrants closer inspection and possible disposal.

Clumping indicates moisture exposure^[13]. While minor clumping might be broken apart, extensive clumping throughout the container suggests the pellets have absorbed humidity and potentially begun degrading. Moisture-exposed supplements risk mold growth and vitamin breakdown^[1].

Color changes signal oxidation or contamination^[13]. Formula 707 pellets should maintain consistent coloring throughout the container. Yellow or brown discoloration, dark spots, or uneven coloring indicate chemical changes from light, heat, or moisture exposure^[13].

Rancid or unusual odors are red flags^[13]. Fresh supplements have minimal scent. A sour, musty, or otherwise unpleasant smell suggests spoilage, possibly from mold or bacterial growth in moisture-contaminated products^[13]. Discard any supplement with off odors.

Visible mold is obviously problematic^[11]. Even small mold spots mean the entire container is compromised. Mold produces mycotoxins that can be harmful to horses, and moldy supplements should never be fed regardless of how recently they were purchased^[11].

Cost-Effective Storage Strategies for Bulk Purchases

Formula 707’s superior storage stability makes bulk purchasing economically smart, but only if you implement proper inventory management. The goal is maximizing cost savings while ensuring every pellet your horse consumes maintains full potency.

Calculate your consumption rate before buying the largest bucket. A 25-pound bucket of Formula 707 Daily Essentials provides up to 200 days of supplementation for one 1,100-pound horse at standard dosing^[12]. If you have multiple horses, larger containers offer better per-serving value, but only if you’ll finish them within the ideal shelf life window.

Under ideal storage conditions, feed might remain safe for four to six months, with properly sealed products lasting longer than opened containers^[8]. Once opened, exposure to air, humidity, and heat begins the degradation clock^[8]. Plan to finish opened Formula 707 containers within 90-120 days for optimal nutrient retention.

For horse owners in hot, humid climates, the 60-day rule offers extra protection^[9]. Purchase quantities you’ll complete within two months during summer, even if larger buckets would normally be more economical. The few dollars saved on bulk pricing aren’t worth feeding degraded supplements.

Implement a “first in, first out” rotation system^[13]. Mark purchase dates on containers and use older stock before newer purchases. This prevents forgotten buckets from sitting in feed rooms for months while you open fresh containers.

Alternative Storage for Extended Bulk Buying

If you want to take advantage of bulk pricing but worry about storage timelines, consider a two-container system. Keep a small working container (perhaps a 1-2 week supply) in your daily feed room while storing the bulk container in a cooler, less-accessed location. This minimizes how often the main container opens, reducing air and moisture exposure^[1].

Some horse owners store excess supplement inventory in climate-controlled areas of their homes^[9]. Formula 707 pellets stored in spare closets, basements with dehumidifiers, or temperature-controlled garages will maintain potency longer than products in uncontrolled barn environments. Transfer weekly portions to your feed room container as needed.

Never refrigerate or freeze supplements unnecessarily^[9]. While pellets won’t be damaged by cold, temperature fluctuations when moving containers in and out of refrigeration can introduce condensation moisture. Store at stable room temperature in the coolest available dry location.

Formula 707’s Quality Standards and Manufacturing Protection

Storage stability begins with manufacturing quality. Formula 707’s NASC Quality Seal certification indicates the company follows rigorous production standards that contribute to product shelf life and consistency.

NASC-certified companies must maintain quality control manuals with written standard operating procedures for production process control^[3]. These procedures ensure consistent product quality batch after batch, which directly affects storage stability. Variable manufacturing can produce pellets with different moisture contents or protective coating quality, leading to unpredictable degradation rates.

The independent third-party audits required every two years verify ongoing compliance with these quality standards^[3]. This means the Formula 707 you purchase maintains the same protective manufacturing processes that contribute to its advertised stability characteristics.

Formula 707 manufactures products in their own Colorado facility^[14], allowing direct quality oversight throughout production. This vertical integration helps maintain the consistent pelleting processes that create moisture-resistant, stable supplements.

Seasonal Storage Adjustments for Year-Round Reliability

Your storage strategy should shift with the seasons to account for changing temperature and humidity conditions. Formula 707’s stability allows flexibility, but seasonal awareness optimizes supplement longevity.

During summer months when barn temperatures exceed 85°F regularly, move Formula 707 to the coolest available location^[1]. This might mean storing supplements in an air-conditioned tack room, bringing them to your climate-controlled home, or placing containers in shaded areas with better air circulation. Monitor barn temperatures with a thermometer to identify the coolest storage spots.

Winter storage is generally less problematic for pelleted supplements. However, prevent containers from sitting directly on cold concrete floors where temperature differentials can cause condensation^[8]. Wooden pallets or plastic crates create airspace underneath buckets, preventing moisture accumulation.

Spring and fall transitions bring temperature fluctuations and often increased humidity from rain or snow. These shoulder seasons demand particular attention to keeping containers tightly sealed. The combination of warm days and cool nights can drive condensation formation if lids aren’t properly secured.

Humidity Control in Seasonal Management

Humidity often poses greater challenges than temperature across all seasons. Areas with high year-round humidity benefit from dedicated moisture management strategies beyond basic container sealing.

Dehumidifiers in feed rooms can significantly extend supplement shelf life in coastal or tropical climates. Maintaining ambient humidity below 50% protects all stored feed and supplements, not just Formula 707^[1]. The investment in climate control equipment often pays for itself through reduced spoilage and waste.

Stack feed bags and supplement containers properly to promote air circulation^[8]. Don’t stack more than five high, and avoid placing containers against exterior walls where temperature and humidity fluctuations are greatest^[8]. Allow space between containers for air movement.

“Exposure to moisture, pests, and fluctuating temperatures can quickly compromise feed quality, increasing the risk of mold growth and nutrient degradation. Airtight containers, regular inspections, and temperature-controlled storage areas go a long way in preventing feed contamination,” explains Dr. Madison Ricard, DVM, Mad Barn Veterinary Educator^[13].

Our review of Formula 707 MetaStable has more detailed product-specific information which can be read here

Formula 707 Storage FAQs

Can I store Formula 707 pellets in my tack room or trailer?

Yes, Formula 707 pellets can be stored in tack rooms or trailers, but with some considerations for temperature control. Tack rooms that remain between 50-85°F work well, and pellets tolerate brief temperature spikes better than powders or liquids^[1]. However, avoid leaving supplements in hot vehicles or trailers for extended periods during summer, as sustained temperatures above 85°F accelerate vitamin degradation^[4]. For show travel, transfer a week’s supply to a smaller airtight container rather than bringing the entire bucket.

How long does Formula 707 stay fresh after opening the container?

When properly stored with the container tightly sealed after each use, Formula 707 pellets maintain their effectiveness for 4-6 months after opening^[8]. The shelf life depends on storage conditions—supplements kept in cool, dry environments (50-70°F with humidity below 50%) last longer than those exposed to heat, moisture, or frequent temperature changes^[1]. Plan to finish opened containers within 90-120 days for optimal nutrient retention, and consider buying smaller quantities during hot, humid summer months when degradation accelerates^[9].

What’s the best way to tell if my Formula 707 has gone bad?

Fresh Formula 707 pellets should be uniform in color, dry to the touch, and have little to no odor. Warning signs of degradation include extensive clumping (indicating moisture exposure), color changes like yellowing or dark spots (suggesting oxidation), rancid or musty odors (pointing to spoilage or mold), or visible mold growth^[13]. If pellets have hardened, become sticky, or developed an unusual texture, the product has likely been compromised^[13]. When in doubt, discard questionable supplements rather than risk feeding degraded nutrients to your horse.

Do I need to refrigerate Formula 707 supplements in hot weather?

No, you should not refrigerate Formula 707 pellets, even during hot weather. While pellets tolerate brief heat exposure, refrigeration introduces moisture through condensation when containers are moved between cold and room temperature^[9]. This moisture can cause clumping and accelerate degradation^[1]. Instead, store supplements in the coolest available dry location in your barn or home—such as an air-conditioned room, basement with dehumidifier, or shaded feed room with good ventilation^[9]. If barn temperatures regularly exceed 85°F, consider purchasing smaller containers that you’ll finish more quickly^[9].

Are Formula 707 pellets more stable than powder supplements?

Yes, Formula 707 pellets offer better storage stability than powder supplements. Pellets contain very little moisture and resist environmental stress better than loose powders, which are hydroscopic and pull moisture from the air^[1]. The pelleting process creates a compressed structure that protects interior vitamins from oxygen exposure and reduces bacterial contamination through steam treatment^[2]. Powders tend to clump in humid conditions and degrade faster once opened, while properly sealed pellets maintain effectiveness for 4-6 months in typical barn storage conditions^[8]. This stability makes pellets more practical for bulk purchasing and reduces waste from spoilage.

Formula 707 Storage Citations

1. Kentucky Performance Products – What You Should Know About Storing Horse Supplements During Hot Summer Months
2. Kentucky Equine Research – How Do Pelleted Horse Feeds Stack Up?
3. National Animal Supplement Council – NASC Quality Seal
4. Getty Equine Nutrition – Heat Alert! Your Feed and Supplements Are Vulnerable
5. Frontiers in Animal Science – Vitamin A source variability: stability and bioavailability in poultry
6. PMC – Stability of vitamin A, E, C and thiamine during storage of different powdered enteral formulas
7. Kentucky Performance Products – What Is the Difference Between Elevate W.S. And Elevate Maintenance Powder
8. The Horse – Horse Feed Storage and Preservation
9. SmartPak Equine – Shelf Life of Vitamins and Supplements for Horses
10. Kentucky Equine Research – Tips for Handling Horse Feed in Hot Weather
11. MSU Extension – Common Toxins in Equine Feedstuffs
12. Chewy – Formula 707 Daily Essentials Product Information
13. Mad Barn – Feed Storage on Horse Farms: Best Practices to Keep Grain, Supplements & Hay Fresh
14. Formula 707 Official Website