I buy corn cob holders, the ones you use as bird feeders and put the bottles in those. They cannot chew through them and when bored they sit on top of them and try to escape.
OR I buy soft soap dispensers from the dollar store, they are quite round near the top and the ASFs just cannot seem to get a good grip on them to chew through. I just switch out the water bottle tops and put them on the dispensers.
But I would take a sample of your water bottle with you and check them before you buy them.
Bruce
Reply With Quote