not sure which one you get but i dont get the aerosol spray i get the pump. i would put money down that i hunt prob some of the tickest woods lol and i check my self every so often to see. i do pick up chiggers but i always carry the bottle as well incase i pick a lot of them up respray instantly. i put a good amount on before i leave the car also so its fresh and i also wear rubber boots. i have had ZERO issues with chiggers, honestly. i swear by that stuff it works and its the only thing i found that does. If you getting back to your car and you have live chiggers on you i didnt apply enough and or you missed spots with the spray...