I was impressed with the size of this cage. The tray is 7" deep, but gerbils need digging space, so I attached 7" plexiglass strips to all sides. This allows them more digging. I was worried that they might escape because although the wire spacing is 1/2", there are several places where the space is slightly bigger (where the door shuts or where the sides meet). I ended up using zip ties in some places to pull the sides together and eliminate extra space where the roof connects to the sides. I have 2 gerbils in it. One is about 6 months old, the other is 4 months old. Because they're juveniles, I was worried that they may be able to flatten out and squeeze through the bars, but so far, so good. It's a really big cage. I didn't think it was hard to assemble, but it did take me some time to add acrylic strips to deepen the base. With modification, this cage does work for gerbils. It would also be PERFECT for a single syrian hamster. They need lots of space, but they're bigger than gerbils.

My mouse got out! The doors are HORRIBLE and even after zip tying the doors shut for the night despite assembling the right way, my mouse got out through the bars at the top because they're more wide than the sides. I am devastated and now even worried about my poor mouse. I HATE WAYFAIR. Don't buy!

My pets absolutely love their new home.

Durable and reliable to keep the small pet in! Made well!

This cage is perfect for hamsters and very simply to put together. Our hamster loves the space she has to run around and play in. The only problem we had is one of the four clips that came with the cage came broken. It’s not a huge deal since three clips will work just fine till the company can send us a replacement. I definitely recommend buying this cage and would buy it again if needed.