I think my little guy has started marking...twice now, just after I've taken him outside and he's gone pee, he's come back in the house and peed where our (female) schnauzer sleeps. The vet says they don't neuter until 6 mos, and he's 5 1/2 - will this help?? Any other suggestions? I've never had a male dog, so I'm totally out of my league...