I also use NBC suits - along with scentkiller, unscented laundry, deoderant, shampoo, ect. I get busted every now and then but much less frequently. Generally deer just start to act a bit nervous instead of snort and run - its as if they think I am 200 yards away instead of 20 (I still hunt the wind tho). The suits generally last me about a season of hard hunting - out almost every day at least once a dayfor 2 months. The only problem is - there is no way I can wear them over70 degrees, I start sweating and shorten its effective life.