Thread: daytime thermals

I've never used thermals (never had the spare budget), so can someone tell me if using thermal spotters during the daytime makes enough difference when finding deer in bush to justify the cost? I think I'm walking past a lot of them, lots of sign, but I don't seem to find them... unless I don't have a rifle with me in which case they seem to pop out much more regularly.

This question is really about daytime use for pest control, not for night time hunting.