Hi, can someone please help me? I have a large steel ice cream machine that seems to have attracted very tiny white bugs. I have cleaned the machine thoroughly and even after cleaning the bugs are there. They are much too small to count legs or anything like that. They just look like specs but they move. I have tried to use bug spray around the machine but it didn't help. I have tried using water and vinegar again to no use. Please can someone tell me how to get rid of them or even tell me what they could be.. Thanks