A couple of options:
1 - Place the already damaged pipes somewhere in your garden as sacrificial tooth grinders. Additionally, bend and shape them to look like an attractive female squirrel. Video the resultant squirrel orgy, post on youtube and make millions.
2. Wrap your new pipes in really strong glue or double-sided sticky tape. Once you've pried them off (dead or alive) you can relocate them miles away from where you live.
3. Smear garlic on your new pipes - not that they are particularly vampiric, they apparently don't like garlic.