- Convenient in that the filler practically does not spill out
- Incomplete. There was no filter, but they noticed it too late. Unpleasant odor passes unhindered. And most importantly, both cats are afraid to go into it, they have not been able to get used to it for a month now. (Despite the fact that we gradually set the position of the door from open to closed. At first they confused it with carrying, thought they were closed there, lay down and waited for the trip. Often they relieve themselves sitting on top, where the filter should be .