[L'il Frankie]

We use Swheat Scoop for our cats, and I've noticed tiny white mites (I assume to be dust mites) crawling along the top of the litter box. I've thoroughly cleaned the box, and replaced the litter, but these little buggers can be hard to get rid of when it's so warm and humid in the basement. Has anyone else ever had this problem, and could they be anything else but dust mites?