Another cat question

[kittycats_delight]

My cats both do this. And the other cats I had in the past also do this. Only when it is a covered litter box though. Does she use a covered box? If so then the fact is there is no where for the smell to escape to and she is trying to cover the stinkies to her satisfaction.

[Freedom]

I have 7 covered boxes and all 7 cats bury for AGES. I never realized it was due to the cover and the smell, thanks for that!