If you want to really do something to stop the needless injury and deaths of cats I have two suggestions-
1. Join the group FelineOwnersAgainstHartz
We are a group commited to seeing that Hartz stop selling flea and tick drops. We need more people who have seen what this stuff does and want to help us get it off the market.
2. Sign the petition against Hartz
Check out the petition and the groups web site for a ton of information www.geocities.com/againsthartz/
We need your help. Together we can and will this.