So I marinated a 12 oz. can of cat food in a bowl of antifreeze. Set it out near where the rac has been doing his damage. Next morning, the ground at the site was wet with antifreeze, suggesting that he dumped it, and quite a bit of the cat food remained in the bowl which was tossed about 20 yds. away.
Do you know whether ACDelco Dex-Cool antifreeze contains denatonium which is an embittering agent? The ingredients list doesn't mention it though, so maybe this is simply a rac who doesn't have a sweet tooth for antifreeze. I can only hope that the meat portion that he did eat contained enough antifreeze to prevent his destructive return.