You can either use a plastic container that you don’t mind getting stained, a glass container or a stainless steel sink. The container needs to be large enough for the items to move freely when dyed. We do not recommend dyeing in a porcelain or fiberglass sink. It is important to clean your container thoroughly right after dyeing. It’s always best to keep containers for dyeing separate from those used for cooking. If you must use a container that’s also used for cooking, it is recommended to clean the container with chlorine bleach or a powdered cleanser after dyeing.