So that is how I clean Lancelots but. I wasn’t sure how you felt about getting her feet wet. I fill the sink with 2 inches of warm soapy water. I put a facecloth in the sink for grip for his feet, and a cloth draped over the edge for his paws. I let him soak his butt for 5 minutes. (Those are the instructions on the chlorhexidine shampoo I use). He doesn’t wriggle and is pretty good about it. After the butt bath, I lie him in hsi side on my lap, and use a cotton swab to clean those skunky glands. I find that a weekly cleaning is sufficient. Normally bunnies keep them clean by themselves. May I ask what gave your bunny her poopy butt? Lancelot has nerve damage from EC, and I suspect arthritis to, so he can’t reach his scent glands. I clean them every weekend. If I find they are dirtier than usuel, I’ll clean twice a week, but once weems to work fine. I use a cotton bud with warm soapy water. I’ve read to use vaseline, but I haven’t tried it. the warm soapy water works just fine. If I were you, I would check them a few times a week, untill I can establish a suitable time frame. For example, if you chek check 3 times a week and they are only plugged up once, then you can check once a week.