A couple of summers ago I noticed my water bill climbing higher and higher and couldn't figure out the cause. It turns out that friends of my neighbors kids, who lived in another neighborhood, would play with the hose and spray each other when we were out of the house. Talking and yelling didn't work so I bought this faucet lockout. Problem solved. A little pricey with the shipping when I purchased it last summer but it's already paid for itself.