When I was still in pampers my parents changed me and from what i remember they’d just put the wet nappy in the kitchen bin. When I started wearing pull-ups I was terrible really looking back on it in up until my mid teens 9 times out of ten I’d step out of my nappy and my oh bottoms afte rod had breakfast to have a shower and I’d just leave the soaked nappy on the bathroom floor really and my mum would dispose of them. In late teens when my younger brothers had stopped wetting and it was just me left in them most of the time I was a bit more discrete about it and would put my own pull-ups in the bin