Yes.
you should clean it once a week
YES
Yes, there should. A hamsters water needs changing every day.
Hamsters lick their paws and fur; they clean themselves.
I clean out my hamsters cage twice a week.
Dwarf hamsters clean themselves. I own one and watch him clean himself all the time. Dwarf hamsters clean themselves by pulling both paws from the back of their neck forward.
I have always given my hamsters Chinchilla sand.
you have to clean there ears regualy
They clean themselves.
no they sit and clean themselves
When you get your hamster, it should already be healthy and clean. When your hamster gets lice, that means they got it from you or any of your friends or family.
When you clean your dwarf hamsters cage you should put fresh bedding in because they could have stored food in it that could rot or they might have urinated in it which should be cleaned so change its nest whenever you clean its cage which should be a around once a week.