sifting cat litter box

Detailed sifting cat litter box Description

I am looking for a plastic cat litter box with a sifting component in the top. The holes in the sifter need to be big enough for sawdust to fall through. We are going to use the cat boxes for pine pellet litter, so the litter sits in the top of the box and then can be sifted down through the screen or special piece into a bottom box. I would like a standard sized litter box, and it is a bonus if you also offer a cat box with a dome lid for privacy for the cat. We do not require any special packaging. We'd like the color to be a neutral tone like beige or tan. We would like a very good quality box that we could sell in the United States.