My LO has been wearing a Pavlik harness for three weeks due to hip socket immaturity following him being breech in utero. The harness cannot be removed under any circumstances, so no baths or swimming. If it becomes soiled, it must be cleaned whilst on. That said, the harness is becoming extremely grubby, particularly the socks! Thankfully no bodily fluids have gotten on it (yet).
Advice from hospital is to try to scrub any dirty areas with a toothbrush, but I don't think this method is at all realistic. I'm wondering if anyone has any suggestions based on their own experience with a Pavlik harness?