@roseonathorn I've heard this as well - just roll or lift their bum higher to tuck the velcro on the back. Also, to prevent babies from undoing their own diapers.
@c88c91 I was disappointed with a bit of a musty smell after a few months with our tiny Japanese washer, but since I switched from liquid to powdered Tide, it's all better and it's the only change I made. It's worth a shot!