I know Emily uses stall dry under her rat's bedding and has reported it's very helpful for that issue. Personally I just clean as usual. I have a small holding box (plastic container with vent holes) and if momma rat is acting up I just pop it in front of her, tap her butt with the lid and she'll scurry in, out of my way and no chance to nip me if she's a mind too. The litter goes into a another similar box and gets checked over before they and their momma go back into their nice clean home.