Last updated Sep 24, 2025
Katelynn Sobus / Cats.com
OPET corn and cassava cat litter makes switching from clay litter a breeze. It has small, round granules, forms perfect clumps, and sifts quickly. It’s even made to mix with and improve your current litter, whether you’re looking to use the last of it up or can’t yet fully commit to a natural cat litter.
Ratings
- Odor Control – 4/5
- Price – 3/5
- Clumping Ability – 5/5
- Dust/Mess – 2/5
- Scent – 3/5
- Easy to Scoop – 4/5
Overall Score: 3.5/5
However, also like clay litter, it’s not without its flaws. In this review, I’ll tell you everything you need to know to determine whether this OPET litter is right for you.
Why Trust Cats.com
I’m a lifelong cat owner with seven senior cats of my own. That means a lot of scooping! I have more than the recommended amount of litter boxes, and I clean them every day.
While it’s definitely a chore, it’s also helped me to learn what’s most important in a cat litter. We’re all looking for something healthy for us, our cats, and the planet. We also want a litter that’s low-tracking, easy to scoop, and doesn’t make our lives more complicated than they have to be!
I’ve reviewed several cat litters here on Cats.com and tried multiple on my own time as well. In addition to other corn-based litters, I’ve tried clay, wooden pellets, almond cat litter, and more. While reviewing, I think about how easy the litter is to clean, test the company’s claims, and observe how my cats feel about the litter.
OPET Brand Overview
OPET is a small, American cat food company with a new litter line as of 2025. They sell freeze-dried food, wet cat food, single-ingredient treats, and more.
Their litter line consists of four products, each of which is made from different ingredients: corn and cassava, mixed tofu and bentonite, mixed tofu, and bentonite.
OPET Corn and Cassava Cat Litter Features
Katelynn Sobus / Cats.com
Often, natural cat litter comes in pelleted form, which is a turn-off for most cats, especially those who are used to using traditional clay litter. OPET’s corn and cassava cat litter has small, round granules that are comfier on your cat’s feet than pellets and make the transition from clay litter easier.
It’s also made to be mixed with your old litter and extend its life cycle by forming better clumps and keeping the litter box cleaner for longer. That said, you can also use OPET litter on its own.
The litter is meant to be fragrance-free, but it smells like perfume to me. I didn’t enjoy the scent, especially upon first pouring it. However, it doesn’t smell as strong while scooping, and it does contain odors well.
The dustiness seems hit or miss, as one bag had very little while the other had a bunch of dust collected at the bottom. The litter is not low tracking and is also very visible on floors and furniture due to its color.
While OPET says that this litter is flushable, it’s not generally recommended to flush cat feces due to the risk of contaminating your area’s water with Toxoplasma, a parasite that can exist even in cats with no symptoms.
Lastly, OPET corn and cassava litter is on the expensive end of natural cat litter, so you may be able to find one that you like more at a lower price.
What We Like:
- Small, round granules similar to clay litter
- More comfortable on cats’ feet than pelleted litter
- Forms solid clumps that are hard to break
- Made with natural ingredients
- Most reviewers seem to enjoy the sweet scent of the product
What We Didn’t Like:
- Mostly dissolves in water but leaves some mushy clumps behind that may clog a toilet
- Tracks heavily and is very visible due to light color
- One bag was quite dusty
- Expensive, even compared to other corn litter
What Did Our Test Cats Think?
The first feature of the litter that I tested was its flushability. While I didn’t want to put it in my toilet, I did put a small handful of litter into a jar of water to see how well it dissolved. At first it fell to the bottom and clumped, but once stirred it dissolved almost fully. There were still some mushy chunks remaining in the mixture, which may have finished dissolving if more water was added.
Katelynn Sobus / Cats.com
After pouring it into my cats’ litter box, they used it as regularly as they do their clay litter. Sometimes they avoid pooping in new litters, but that wasn’t a problem with OPET. They seemed to prefer it to the pelleted litter that I was testing in the same room.
Katelynn Sobus / Cats.com
The litter clumped very well and was easy to scoop. The clumps sometimes stuck to the bottom of the box, even when the litter was several inches deep. They came loose in one piece, but not without jostling the litter box and sometimes causing a spill. I’d recommend a high-sided box to stop this from happening.
Katelynn Sobus / Cats.com
My biggest gripe with the litter is that it tracks everywhere! It’s not worse than your average clay litter, but it feels like it because the pieces are white and very visible. I was constantly vacuuming around the box and regularly found litter on the furniture or in the next room.
If you can deal with the tracking and don’t mind the fragrance, I do think this is a decent cat litter that’s worth a try. Sadly, the tracking was too much for me to consider repurchasing.
What Do Customers Think of the OPET Corn and Cassava Cat Litter?
While we try to share both positive and negative reviews, OPET cat litter released this past April and has very few reviews on Amazon. That said, here’s what some customers had to say:
Positive Reviews
“Overall, this cat litter strikes the perfect balance of quality and value. Cats have adjusted to it right away, and I’ll definitely keep using it. Highly recommend for anyone looking for a reliable, budget-friendly option that doesn’t compromise on performance.” – by Johnny Cabrera, on Amazon, August 21, 2025
“Honestly, this cat litter is a game changer. It clumps super well so scooping is really easy and quick. The smell control is amazing and even with two cats my place doesn’t stink at all. It’s not dusty either and my cats used to sneeze with other brands. They really like it and I’m definitely sticking with this one.” – by Evan, on Amazon, August 20, 2025
Customers praised OPET for having a mild fragrance, natural ingredients, and a low amount of dust. Several reviewers liked that the litter is flushable as well.
Negative Reviews
Currently, there are two short negative reviews on Amazon. Both complain of litter tracking, which is something I was frustrated with as well. I also found one out of the two bags I purchased to be quite dusty, and the scent to be unpleasant–though other reviewers seemed to enjoy it!
“My cats are usually okay with any type of litter, but it has to be unscented due to skin sensitivities. I always read product descriptions carefully before purchasing because sometimes it’s not obvious whether a litter is scented or not. This product absolutely says it’s unscented, but unfortunately it’s not. I will give them some credit – it’s not an offensive, heavy, perfume odor like most scented litters. It’s light and fresh like a mild laundry detergent. But it does have fragrance and I’m not willing to risk my cats having a reaction to it.
Cassava litters are usually very good and clump better than any other type. If you are interested in a cassava litter, I would recommend the brand sold in most major pet stores. (I don’t think I can mention the name in my review, but it shouldn’t be hard to find) Don’t waste your money on this – you don’t know what’s in it!” – by Kara B., on Amazon, September 7, 2025
Similar Brands
Looking for other natural cat litters? Check out some of our other litter reviews.
