I've been using Bumgenius V3 for about 6 or 7 months now and abcolutely love them - never had a leak and dd is very comfy in them. Recently, though, I;'ve noticed that they've started to smell. At first I thought it was her wee that was more smelly (which it may be) as she's now eating a lot more solid food, but I smelled them straight out of the washing machine the other day and they smell of wee (not strongly, but still it's there) even then. I looked up stripping nappies on the web and there is so much (sometime conflicting) advice that I don't know what to do. I tried today to have a go at them, but they're not much better. I put them on a rinse wash twice, then washed at 60 intensive stains (whatever that means!) with a very small amount of bio powder then rinsed four times until the water wasn't bubbling. They smelled OK when I took them out and I though I'd solved the problem, then I dried them in the dryer - been chucking it down all day - and now they're dry I think I can still smell wee on them (grr). What should I do next? I'm considering the vinegar in the rinse method, but am a bit worried about putting vinegar through the machine and anyway how much would I need?! I've also read about putting a dishwasher tablet into the washing machine with them, but am concerned about whether dd will react badly to them (not that she's particularly allergic or anything). Anyway if someone could just tell me what they do/did about this problem It would be much appreciated 
Thank you!