I use this product for one guinea pig and she absolutely loves it. The top kept getting caught on the "walls" so I removed it ("walls" are too high for her to climb so far but since she adores climbing challenges I'm keeping an eye on it). The base also needs to be scrubbed thoroughly (hard work but size is worth it) and air dried (first time I cleaned it I was surprised how much the cloth soaked up). I do give it a good review though because it is the best cage I have found for my guinea and she loves being able to run around and hide under the ramps.