They work when used properly . If you have a buck that won't come in after sunrise this is one method that may cause him to linger awhile longer trying to connect with the doe that he thinks is peeing in his scrape . If nothing else it gets deer to stop and investigate for the crucial two or threeseconds that it takes you to get your sights on them . BTW , you can also use them to dispense curiosity and food type lures . This is a good tactic for late season deer .