On January 27, 2012:
I use them for all sorts of baby geckos. I'm able to spray heavily but they still dry out in between so I don't get mold. Great for geckos like baby gargoyles that need to be housed individually too!

On October 28, 2011:
My department owns dozens of these in all sizes and they're used to isolate and maintain marine invertebrates of all types in our flowing natural seawater system. The only occasional glitch is that some strong and agile crabs are able to pop the lid open and escape. Otherwise, they're durable and long-lasting, even when spending their time completely immersed in seawater for weeks or months. The solution to the escape hatch issue is rubber bands. Otherwise, my classrooms can't do without 'em!

On October 28, 2011:
The wet lab in my department uses these super handy critter keepers by the dozens, mostly for isolating and maintaining marine invertebrates and small fish in our flowing natural seawater system. We probably own a hundred of them or more. They work great about 95% of the time, except that the small window hatch doesn't always stay tightly closed and some crafty (and strong) critters like our local green crabs (Carcinus maenus) are able to open them sometimes, and escape. Otherwise, they're tough, durable, and easy to clean. The polycarbonate casing stays fairly clear for years, even totally immersed in seawater. The solution to the escape hatch problem is rubber bands. I give them 4 stars only because of that glitch. Otherwise they are an indispensable tool in my labs.

On June 3, 2011:
Price is good, prompt delivery. The lids are a bit on the flimsy side. Thanks.

On August 17, 2010:
So cute! We got some from the OC fair with goldfish and I got the idea to give them out for our Luau to the kids as party favors. The kids loved it.

On July 15, 2010:
this thing is awesome i love it! they are great for all types of critters, or should i say "kritters!"

On February 26, 2010:
I gave these out at a residence hall program, and everyone loved it! best price i could find anywhere by far.

On September 8, 2009:
Love the kritter keepers. They're great for my bettas who are much happier in their own homes rather than sharing a divided 10 gallon!

On April 11, 2008:
These are great for housing small animals, from birds to rodents to reptiles. They're easy to clean and relatively sturdy. Great product!

On January 14, 2008:
Great for breeder boxes- highly recommended! Easily stacked as well.

On January 14, 2008:
I own two of these cages, one of them is a medium and one extra large. The medium was the first cage I brought and I love the product already, but I felt it wasn't big enough, so I brought the largest one. It was bigger than expected and my hamster love the cage. When I found out Pet Mountain was selling these XL were so cheap, I brought one. It was packaged nicely. I love the size and the price. Since the cage is so big, I'm planning on buying another hamster. I will do business again with this site for sure!

On January 9, 2008:
I raise sugar gliders and ship all over the US and I put these in a cat carrier and they give the proper ventilation for these little guys with plenty of room to move around.

On December 11, 2007:
I raise Killifish. These are perfect size breeding tanks. At these prices you can't go wrong!!!

On September 9, 2007:
These are wonderful sized containers for many types of small pets and very versatile. They are a must have for trips to the pet store to bring home a small animal (rodent, reptile, etc..) safely rather than in a box! For some species, they can be a starter set for a home environment tho all animals should be given as much room as possible for a long healthy life. (NOT recommended for a rodent starter set!) They are great for quick transport on trips or for temp housing while cleaning the pets main home. They are easily accessible to put the animal or food in container and secure to keep them inside tho the plastic snap up lid should ALWAYS be extra secured just in case...by tape or a heavy object and stabilized.

On September 5, 2007:
We use these plastic keepers for all kinds of "stuff", both living and for things on display.
We give them to all of the second grade class rooms in our school district with Kritters to keep for the school year.
They are economical, and very useful.

On May 21, 2007:
L or XL Kritter Keepers are perfect for a boy mouse or a pregnant momma. Any size is great for transportation or temporary housing as well. Much cheaper than buying an aquarium and a lid and much more worth it. The lids are nice and secure, and cleaning is a snap. Lightweight for those who, for whatever reason, may have a hard time lifting things. I've heard of mice and hamsters chewing through but have never personally had a problem. I love these!

On May 8, 2007:
I've had rats and gerbils for years, and this is the only carrier I use. Its solid sides block drafts in cooler weather, and it's a cinch to clean. This is the best price I've found anywhere, too.

On April 6, 2007:
These containers are great!! So easy to clean and transport... =)

On April 1, 2007:
Used them once.. but definitely will be using them again.. great and fast shipping!! Well packaged!!

On March 22, 2007:
Great Shipping... items arrived as expected and well packaged.. definitely will do business again..

On March 18, 2007:
We use these boxes to show our rats in at the NIRO Show in Illinois every year. They are the perfect size for the short time the rats are in them. Quality made!