Your guinea pig eats hay all day, every day. The brand and cut you pick matters more than you’d think.
Adult guinea pigs need unlimited timothy hay that’s low in calcium, while babies do better with calcium-rich alfalfa. The stem-to-leaf ratio, freshness, and dust level vary widely between brands like Kaytee, Oxbow, and Small Pet Select.
Hay also keeps their constantly growing teeth worn down. Poor-quality hay with too many brittle stems won’t do the job as well.
Some hays can cause allergies in both guinea pigs and their owners, so that’s worth checking too.
We’ve compared 10 hay brands to help you find the freshest, most nutritious option for your piggy.
Quick Comparison Chart
| # | Product | Our Rating | ||
|---|---|---|---|---|
| 1 |  |
Kaytee Timothy Hay | ★★★★★ | Check Price |
| 2 |  |
Vitakraft Timothy Hay | ★★★★★ | Check Price |
| 3 |  |
Grandpa's Best Orchard Grass Hay | ★★★★☆ | Check Price |
| 4 |  |
Standlee Timothy Grass | ★★★★☆ | Check Price |
| 5 |  |
Oxbow Orchard Grass Hay | ★★★★☆ | Check Price |
| 6 |  |
Small Pet Select Orchard Grass Hay | ★★★★☆ | Check Price |
| 7 |  |
Bunny Honey Orchard Grass Hay | ★★★★☆ | Check Price |
| 8 |  |
Kaytee Timothy Hay Plus Carrots | ★★★★☆ | Check Price |
| 9 |  |
Ohcool Timothy Hay | ★★★★☆ | Check Price |
| 10 |  |
Kaytee Timothy Hearty Hay | ★★★★☆ | Check Price |
10 Best Guinea Pig Hay Brands Reviewed
We tested timothy, orchard grass, and flavored hays from top brands to find the ones guinea pigs actually enjoy eating. Each pick was evaluated on freshness, fiber content, dust level, and how well it supports digestive and dental health.
Most of these hays arrive in resealable bags or boxes designed to lock in freshness. That matters more than you’d think once you see how quickly a stale batch gets ignored.
1. Kaytee Timothy Hay
Kaytee Timothy Hay
A hand-selected, pesticide-free timothy hay grown specifically for small animals with long fiber strands and a proper leaf-to-stem ratio.
Pros
- Hand-selected for ideal leaf-to-stem ratio
- Grown without pesticides or preservatives
- High fiber supports digestive health
- Available in sizes from 24 oz to 20 lbs
- Trusted brand with 150+ years experience
Cons
- Some bags contain more stem than leaf
- Freshness can vary between batches
Kaytee Timothy Hay is our top pick because it consistently delivers what guinea pigs need most: long fiber strands with a solid leaf-to-stem ratio. It’s grown without pesticides or preservatives and isn’t genetically engineered, which is exactly what adult piggies over 7 months old need.
The range of sizes from 24 oz to 20 lbs makes it easy to match your guinea pig’s appetite. If your piggy isn’t picky and just wants a reliable high-fiber hay that supports digestive and dental health, this is the one to start with.
2. Vitakraft Timothy Hay
Vitakraft Timothy Hay
A 100% sun-cured, farm-grown timothy hay harvested by hand at peak maturity with easy-to-feed mini bale portions.
Pros
- 100% sun-cured with no artificial colors
- Mini bales make feeding easy and clean
- Harvested at peak maturity for nutrients
- Long strands support dental health
- High fiber, low protein and calcium
Cons
- Compressed bales can be hard to pull apart
- Smaller package size than competitors
Vitakraft’s sun-curing process gives this hay a naturally sweet flavor that picky guinea pigs tend to love. The mini bale format is genuinely clever because each slice is pre-portioned, which cuts down on mess and makes feeding time faster.
The long strand fibers do a great job wearing down your piggy’s teeth, and the low protein and calcium levels make it ideal for adults. If your guinea pig prefers softer, sweeter hay with minimal dust, Vitakraft is a strong runner-up to Kaytee.
3. Grandpa’s Best Orchard Grass Hay
Grandpa's Best Orchard Grass Hay
A premium, hand-selected orchard grass hay that's low in dust and chemical-free, available in a generous 20 lb loose box.
Pros
- Hand-selected straight from the bale
- Chemical free with no additives
- Low in protein and calcium
- High fiber supports balanced diet
- Great 20 lb bulk value
Cons
- Loose hay can be messier to store
- Orchard grass is softer, less tooth wear
- Box packaging isn't resealable
Grandpa’s Best stands out for the sheer value of its 20 lb loose box. Every strand is hand-selected and hand-packaged with zero chemicals, additives, or preservatives, so you’re getting clean hay in bulk.
The orchard grass is naturally softer and sweeter than timothy, which makes it a great option for piggies transitioning off alfalfa.
The low protein and calcium profile works well for adult guinea pigs who need a fiber-rich diet without the extras. One thing to keep in mind is that the loose box isn’t resealable, so you’ll want a storage bin to keep it fresh after opening.
4. Standlee Timothy Grass
Standlee Timothy Grass
A naturally sun-cured premium western timothy grass forage in a specially designed resealable box for small companion animals.
Pros
- Naturally sun-cured premium western timothy
- Resealable box keeps hay fresh longer
- Stimulates chewing for proper teeth wear
- Suitable for multiple small pet species
- No additives or artificial ingredients
Cons
- 18 oz size runs out quickly
- Not intended as sole diet component
Standlee is a brand that’s been feeding horses and livestock for decades, and their small animal timothy grass reflects that expertise. The resealable box is a genuinely useful feature that keeps the hay dry and uncontaminated between feedings, which most bag-style competitors can’t match.
The sun-cured western timothy promotes natural chewing and healthy teeth wear. The 18 oz package is on the smaller side, so it’s best as a trial or supplement alongside a larger hay supply rather than a standalone option for big eaters.
5. Oxbow Orchard Grass Hay
Oxbow Orchard Grass Hay
A soft-textured, naturally sweet orchard grass hay from Oxbow's family of farms, designed to support digestive health and enrichment.
Pros
- Soft texture appeals to picky eaters
- Naturally sweet flavor piggies love
- Harvested from Oxbow's family of farms
- High fiber for digestive and dental health
- Backed by Oxbow's trusted reputation
Cons
- Orchard grass is softer than timothy
- 40 oz bag isn't the biggest option
- Texture varies slightly between batches
Oxbow is one of the most trusted brands in the small pet space, and their orchard grass hay lives up to that reputation. The naturally sweet flavor and soft texture make it especially appealing to guinea pigs who refuse to eat tougher timothy varieties.
It’s harvested fresh from Oxbow’s family of US farms, so you’re getting consistent quality.
The high fiber content still supports digestion and dental health even though orchard grass is softer than timothy. If you have a picky piggy who turns their nose up at coarser hay, Oxbow’s orchard grass is a reliable way to keep them eating all day.
6. Small Pet Select Orchard Grass Hay
Small Pet Select Orchard Grass Hay
A hand-packed, 100% US-grown orchard grass hay in earth-friendly packaging, ideal for owners with timothy hay allergies.
Pros
- Perfect alternative for timothy hay allergies
- Hand-packed in small batches for freshness
- 100% US-grown orchard grass
- Soft texture with minimal stem or seed head
- 100% satisfaction guarantee included
Cons
- 12 oz starter size is quite small
- Softer grass provides less tooth wear
Small Pet Select’s orchard grass hay is the go-to choice if you or your guinea pig have timothy hay allergies. Each box is hand-packed in small batches, and the earth-friendly packaging avoids the compression that damages hay integrity.
You’ll notice lots of soft, munchable grass with very little stem or seed head.
The 100% satisfaction guarantee gives you peace of mind if your piggy turns out to be picky about it. The 12 oz starter size is great for testing, but you’ll likely want to size up once you see your guinea pig digging in.
7. Bunny Honey Orchard Grass Hay
Bunny Honey Orchard Grass Hay
A fresh-cut orchard grass hay with individual 1 oz servings inside a 5 lb bag for easy portion control and lasting freshness.
Pros
- Individual portions keep hay fresh longer
- High-fiber, long-strand for digestion
- Supports dental care through chewing
- Suitable for all small pet life stages
- Convenient 5 lb bag size
Cons
- Individual wrapping creates more waste
- Portions may be too small for big eaters
- Less well-known brand than competitors
Bunny Honey’s individual serving approach is unique on this list. Each 1 oz portion stays sealed until you’re ready to feed, which means the last serving is just as fresh as the first.
The long-strand orchard grass fibers promote healthy digestion and give your guinea pig’s teeth a good workout.
It’s suitable for all life stages, so you don’t need to switch brands as your piggy grows. The trade-off is that individual wrapping creates extra waste, and heavier eaters may burn through the portions faster than you’d like.
8. Kaytee Timothy Hay Plus Carrots
Kaytee Timothy Hay Plus Carrots
A long-strand timothy hay blended with real carrots, spearmint, and marigold for added enrichment and flavor variety.
Pros
- Carrot and herb mix entices picky eaters
- Long-strand timothy for high fiber
- Grown specifically for small animals
- All natural, non-GMO ingredients
- Fun texture variety for enrichment
Cons
- Added extras may cause selective eating
- 24 oz size only, no bulk option
- Carrots add sugar to the diet
Kaytee’s Timothy Hay Plus Carrots is designed for guinea pigs who’ve gotten bored with plain hay. The blend of real carrot pieces, spearmint, and marigold adds textures and flavors that can spark interest in even the pickiest eaters.
It’s still built on a base of long-strand timothy, so the fiber content stays solid.
The catch is that some piggies will cherry-pick the tasty bits and leave the hay behind. It works best as a supplement alongside a plain timothy hay rather than the sole hay in the cage.
The 24 oz bag is the only size available, so heavy eaters will go through it quickly.
9. Ohcool Timothy Hay
Ohcool Timothy Hay
A chemical-free timothy hay dried with hot air technology to stay green and tender, with manual sorting for a dust-free experience.
Pros
- Hot air drying locks in nutrients
- Manually sorted for dust-free quality
- Chemical free from organic ranch
- Soft leaves with crispy long stems
- Great for picky or sick pets
Cons
- 1.1 lb package is very small
- Newer brand with less track record
- Hot air drying changes hay texture
Ohcool’s hot air drying technology is what makes this hay different from the rest. Instead of traditional sun-curing, the hot air process keeps the leaves green and tender while locking in nutrients and eliminating that musty smell some hays develop.
Every batch is manually sorted to remove soil, weeds, and debris, resulting in a genuinely dust-free product.
The soft leaves combined with crispy long stems give a nice mix that works well for picky eaters, younger piggies, and even sick ones who’ve lost their appetite. The only drawback is the 1.1 lb package size, which won’t last long for a guinea pig that eats hay all day.
10. Kaytee Timothy Hearty Hay
Kaytee Timothy Hearty Hay
A hearty first-cut timothy hay that's extra crunchy and high in fiber, grown without pesticides for small animals who love the crunch.
Pros
- First cut hay is extra hearty and crunchy
- High fiber supports digestive health
- Grown without pesticides naturally
- Great for dental wear from tough stems
- 48 oz bag is a solid size
Cons
- First cut can be too stemmy for some
- Crunchy texture puts off picky eaters
- Less leafy than second or third cut
Kaytee’s Hearty Hay is specifically a first-cut timothy, which means it’s crunchier and more fibrous than the standard second-cut you’ll find in most bags. That extra toughness is actually a benefit for guinea pigs who need more dental wear from their hay.
The stiff stems really work those constantly growing teeth.
It’s grown without pesticides and comes in a 48 oz bag, which is a decent size for the quality. The trade-off is that picky eaters may not enjoy the crunchier texture, and you’ll find more stem than leaf compared to softer cuts.
If your piggy loves hearty, crunchy hay, this one’s worth trying.
Why Is The Quality of Hay Important For Your Guinea Pigs?
The best hay for your guinea pig is high in fiber but low in calcium and phosphorus, which helps your pet digest its food.
For adult guinea pigs, there are different types of hay to choose from but commonly used are timothy and orchard grass hay, as well as other types of grass hays.
For baby guinea pigs, alfalfa hay is the best choice because of its nutritional value.
It also helps keep their teeth clean and sharp, which makes eating and living a happy, healthy life, that much better.
Different guinea pigs need different kinds of quality hays to get the essential nutrients. Young ones need higher calcium, higher protein, and a lower fiber diet.
However, once guinea pigs get older, they require less calcium, less protein, but much higher fiber, so make sure you choose the right type of hay for your guinea pig.
What Is The Best Hay For Your Guinea Pig?
When choosing a guinea pig hay, it’s important to consider how old your guinea pig is, how picky they are, and what the current state of their health is. Make sure you choose different types of hay according to the guinea pig’s diet.
If you know that they have teeth that grow fast or have been causing them pain, consider one that’s more rough or stiff to promote the maintenance of dental health.
If you’re looking to improve your pet’s diet, you can do so by choosing one of the highest quality timothy hay for guinea pigs listed above.
What’s important is that the hay is dry and dust-free. The ones that aren’t can never find their way to the list of the best hay for your guinea pig.
There are many brands to choose from, all with different ingredients, costs, and quantities. Your guinea pig might already enjoy its favorite guinea pig hay.
What you should also know is that guinea pigs also like orchard hay, which smells sweet and has a softer texture than timothy hay.
However, orchard hay and timothy hay for guinea pigs have a similar nutritional value. Orchard hay has a lower protein content but is high in fiber, which makes them almost equally nutritious.
Final Thoughts
The difference between hay your guinea pig devours and hay they ignore usually comes down to one thing: freshness. A stale bag from a premium brand gets pushed aside just as fast as a cheap one, so always check for a green color and pleasant grassy smell before serving.
Kaytee Timothy Hay consistently delivers on freshness, which is why it’s our top pick. The leaf-to-stem ratio stays reliable bag after bag, the hay is pesticide-free, and the size options run from 24 oz up to 20 lbs for multi-pig households.
If your guinea pig turns their nose up at timothy, try an orchard grass like Grandpa’s Best or Oxbow’s version. Orchard grass has a sweeter flavor and softer texture that often wins over picky eaters.
Unlimited hay should be available at all times, no matter which brand you go with. It’s the single most important part of your guinea pig’s diet for both digestion and dental health.
