Colin
TVWBB All-Star
This is the same ash bucket that I use. It serves as a holding container before going to the dumpster. As far as used coals, they stay in the kettle or kamato until next use.I use this or maybe a 10 gallon metal container wherein I dump my spent coals and ash:
https://www.amazon.com/dp/B0758G5HVF/?tag=tvwb-20
I typically dump the day following a cook and keep the can on a concrete slab for days before I get rid of it. But I'm not an expert, so others should chime-in.