A different tool for a problem propionic acid solves only partway.
Buffered propionic acid works — it's the industry standard for good reason. HayRite isn't trying to replace it everywhere. Here's where it fits, where it doesn't, and what an honest comparison looks like.
The honest comparison
The dominant chemical preservatives in this market are buffered propionic acid products: The Juice (Nuhn), CropSaver (New Holland), Baler's Choice (Harvest Tec), Case IH ThirtyPlus, AGCO Hay Preservative, HayFresh, Hay Guard, and others. They share the same active mechanism. HayRite is the first biological-for-dry-hay product positioned against this category.
| HayRite (biological) | Buffered propionic acid | |
|---|---|---|
| Mechanism | Beneficial Bacillus + lipopeptides occupy hay surface, suppress mould | Acidifies hay below mould-growth pH threshold |
| When it works | From cutting through long-term storage | Late-baling moisture insurance; storage |
| Effective moisture range | 18–25% small square; lower for round/large square | Up to 30% (varies by product) |
| Equipment compatibility | Non-corrosive | Buffered = much less corrosive than straight propionic, but still acidic |
| Operator handling | Standard hay-handling PPE; eye/skin caution only | Acid-handling protocols recommended |
| Animal feed status | Direct-fed microbial category | Approved as feed-safe |
| Withholding period | None | None for buffered |
| Organic compatibility | Designed for organic compatibility ? Open | Generally not organic-compatible |
| Shelf life | 12–24 months | Multi-year (chemical product) |
Source notes: The Juice FAQ (juicehay.com), Harvest Tec product pages, Case IH ThirtyPlus product pages, and HayRite product label. Comparison reflects category-typical specifications; individual product variations exist.
Why farmers switch (when they do)
⊙ Field Knowledge The most common reasons hay producers move from chemical to biological:
- Equipment longevity — even buffered propionic still adds wear over years of use
- Operator handling — fewer PPE requirements, simpler safety protocols
- Animal sensitivity — horse hay markets and organic operations want chemical-free options
- Storage stability beyond the chemical's pH window — biological keeps working longer
Where HayRite is not the right tool
Honesty includes saying where the product doesn't fit. HayRite isn't the right choice for:
- Very high moisture hay (above ~28%). At those moistures, propionic acid still has the edge — HayRite needs the bacterial population to establish, which is harder when the moisture is extreme.
- Operations under contracts that mandate specific chemical preservatives. Some commodity contracts specify propionic-treated hay; HayRite won't meet those specifications until the relevant standards add biological options.
- Operations without baler-mounted sprayer equipment. Setup is the same as for propionic, but the equipment cost is real.
⊙ Field Knowledge If you're already running propionic well at high moistures and don't have a reason to change, HayRite probably isn't a switch worth making just to switch.
Compare with your numbers
The calculator on our home page lets you model what untreated losses are likely costing you. From there, the question of which tool to use becomes much more concrete.
Run the calculator →Apply to a Field Study