Think a bit - would you rather have a nice, quiet, hibernating animal under your porch, who isn't going to do anything but maybe snore gently and eat garbage, unless you are REALLY stupid and antagonise him, or would you rather have a nice, quiet, decomposing animal under your porch, stinking out the whole house for months on end without the benefit of spraying?

I know what I'd prefer.... but I haven't got that sort of porch.

LTS