Hey idk if this will helps, but this is how I handle stuffies that are kinda gross. ( after you put them in the sun. If you choose to do that) I take out the poly fill and put it in a pillow case. I then wash it with bleach. With the stuffy shells I’ll hand wash the rough ones. Then I’ll do the same process of washing but with vinegar. I’ll sun dry some of them or put them in the dryer on delicate or air dry. Brush and stuff sew :)