I totally removed the last rug we have in the living room for baby wants to stay underneath it. And it’s dangerous for him to get suffocate aside from the dirt. Actually the reason we put three rug on the permanent carpet we have is for our bb BABUS to have a clean area. But since he is a bb explorer now that he is 26 months old, there is no reason to keep the rugs. I guess he is immune with some dirt already. Not like when he was a small bb wherein he will have some rashes when he would be expose with a little dirty area. Right now, he seems to be fine. In fact, he loves to mop his forehead on the old carpet. Huh, what a baby!