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Title: Hamsterific...
Review: Bought two of these for two hamsters. Works well, doesn't leak (if you have the top on tight), the o ring does occasionally come out of the top, so make sure thats in there tight. I always leave them to come to room temp after filing before putting in the cage - helps to stop leaks.Only problem I came across is one of my hamsters likes to climb this and would use it to aid in his escapes - so I had to take it away and revert to a round bottle that he can't climb. For the other (less houdini style) it works really well and sits neatly on the cage.
