Tink's Power Buck is a time tested controlled formulation to stimulate aggression in other bucks in the area. This aggression is a result of competition for the breeding rights in the area. A benefit of using Tink's Power Buck in scrapes or mock scrapes is that any moisture will reactivate the formula. Tink's Power Buck has a mild smell but will get stronger when exposed naturally to the elements. It doesn't have to stick to be effective. This product can be used all season long.