Why is my 2 gerbils not drinking its water?

Question
My gerbils are ok. They eat and are active but I don't sêe them drinking. The water bottle is reachable and is always changed daily. Why is my 2 gerbils not drinking any water?

Answer
have you checked to make sure the bottle is working? Sometimes the bottle drinking tube get stopped up and they can't get anything to drink. I'm quite sure they are drinking but they don't drink much. every other day I change my hamster's water and believe me sometimes it still looks full.