A few weeks ago Nina started wetting through the BBH bamboo fitted after only an hour of having them on, which I thought were odd as they were fairly new. What I found worked was that we have to use both short and long boosters and they need to be positioned towards the front of the nappy, and we almost always need a cover on. I also started reducing the amount of detergent I was using. Although I was using half the recommended usage, I found it was still too much. With the covers I only use fleece or BBH wool covers, and haven't had a leak since.

As for them falling apart, no idea about that one. Hopefully it doesn't happen again and they were just a bad batch.