My YDD is 21 months old and we have been using her arm for Dexcom. Problem is that she has begun picking at it which has been pulling them up, and actually pulled one completely off yesterday. I decided to try her bum this time, but of course doing that causes the whole "diaper issue". I have covered it with IV3000 but have to change that at almost every diaper change due to her being a super soaker, causing the IV3000 to pull up. We also run into the poop issue of a sensor being there. I really like it on her arm but she is constantly telling me it hurts, so she picks and rubs at it, which she isn't doing when it is on her bum. I have tried skintac on her arm, tried putting IV3000 over it on her arm, or tried putting nothiing on it, thinking maybe the extra measures i was doing was causing her to itch and it did nothing. Do you hqve any it her suggestions, either for her arm or for a more waterproof solution for her bum?