I use the Oasis bottles with the metal guard in all my tanks and have never
had a problem. I tried several kinds in the past and I find Oasis bottles to
work out best.
Kathleen
>I have used the Oasis bell bottles (5oz) for years and have never had one
>successfully chewed.
Our gerbils would knock them off the side of the tank, and then chew the
support for the wire off.
