well, i have too much to say on the subject besides this,, they r good almost all the time, yet they r not the greatest thing ever, timing and location r keys to using them, although i dont beleive that ducks r intelligent enough to remmember that a decoy is a real bad place to b, they r not yotes, ive had a flock of ducks come in commited and i shoot a few then the same flock cuppes in again, just a reminder that they do work, (not as good as the manufactures would like) yet they do spook a few ducks also they do work better in low light conditions, after the sun is up i like to shut them off.. just a peronal prference good luck