Cleaning out containers is always a pain especially when using beeswax or other waxes. You can never get it fully clean. BUT I found these little silicone flexible measuring cups that work great on clean up. You can just let the wax or butters cool and then turn these inside out and the wax and butters pop right off. Then you can wipe it down and it's fully clean for next time. Plus you can squeeze it to control the pour and it doesn't get hot on your hand even if the wax inside is hot as blazes.
https://www.webstaurantstore.com/ta...icone-3-sided-measuring-cup-set/808HSMC3.html
You can also find them on Amazon
https://smile.amazon.com/Measuring-...+silicone+measuring+cup&qid=1607024047&sr=8-9
https://smile.amazon.com/dp/B01B7HS...9Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=
https://www.webstaurantstore.com/ta...icone-3-sided-measuring-cup-set/808HSMC3.html
You can also find them on Amazon
https://smile.amazon.com/Measuring-...+silicone+measuring+cup&qid=1607024047&sr=8-9
https://smile.amazon.com/dp/B01B7HS...9Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=