Bathrooms are another common refuge for cockroaches, probably because of the easy access to water (not to mention pipes to hide in). Sure, there is no “food” in there, but cockroaches will eat just about anything, including grooming products, tissue, and even hair.
A cockroach infestation is no laughing matter. They are not only creepy but can also spread harmful diseases to you and the ones you care about. The safest and most effective way to deal with a serious roach problem is to hire a professional. A qualified pest control technician will be able to find these nasty critters and remove them from your home as quickly as possible.