Thanks for giving me a few more ideas
but, seriously, I've decided not to go with the radiator fluid.
BTW, squirrel poison that you buy in the store that is labeled for that use, isn't that just as bad as some of these other "home remedies"? I mean, if another animal eats the squirrel after it was killed by "legal" squirrel poison, won't that animal die too or at least get real sick? Also, I can't imagine death by "legal" squirrel poison would be any more pleasant than death by radiator fluid.

BTW, squirrel poison that you buy in the store that is labeled for that use, isn't that just as bad as some of these other "home remedies"? I mean, if another animal eats the squirrel after it was killed by "legal" squirrel poison, won't that animal die too or at least get real sick? Also, I can't imagine death by "legal" squirrel poison would be any more pleasant than death by radiator fluid.