I have tried to use reusable nappies twice in the last month, but each time DD gets a very sore bottom. After the first time I asked The Nappy lady for advice and she said that our Ecover washing powder was probably the problem and to strip wash them. I did this, but after using them for the last two days DD is once again sore. She doesn't get any rash whatsoever using Naty disposables. I really want to use reusables, but unless I can solve this problem I'll have to give up. The nappies are Tots Bots.