I spray EVRYTHING down. It all boils down to whether I trust my pants or my boots to leave LESS scent on the grass/ground/weeds on the way in AND out. I trust my boots to leave LESS.

I'm also MORE worried about the heat that my bodys creating.....and the scent that's exiting out my pants legs. Couple this concern with the one above.....and I'll keep doing it my way.

Do whatever works for you.