We have glass shower doors too. I found a neat thing at Petco - a pet shower attachment. You take off your shower head and put this plastic piece on and then shower hose head then goes back on. Into the plastic piece fits this shower hose attachment that's 6' long. Works so well for rinsing the dogs including the underside which is saying something on a dachshund. Makes the bathing experince so much easier (at least for me). At least I don't get quite so wet.