I wouldn't bathe them often, shampoo can mess with their natural skin oils. I definitely don't think you should use human shampoo, its too harsh. An oatmeal based pet shampoo would be the best. But boxers really shouldn't be bathed very often. My vet told me he never needs a bath unless he gets into something. Wet wipes are pretty good for a quick clean-up. I've actually found that the puppy smell diminishes after a few weeks. If your house smells, clean the house...not the dog. It's not their fault they are dogs.