How do you remove wax and black soot from candle containers?

I use good ol Hot, soapy water. I'm not sure what your container is. But, hot water loosens up the wax & it should peel off easily.

Or you can place ice cubes inside to harden the wax enough to be able to scrape out. Then wash with hot soapy water and a dish rag until the black soot comes off.

I put mine in the freezer for a bit and it comes right out.

Dishwasher

If not plastic I put in oven on a sheet pan layered with lots of paper towels. When still warm I clean with throw away rags. I would not put in dishwasher if there is wax as it can clog dishwasher. B

The soot should just wipe out with a paper towel while it is still dry.

The freezer trick works for removing the candle. I have also seen a bit of mineral oil work when my Grandma helped exchange votive candle in church.

I was going to ask the same question!!! So far, I have tried everything but the oven idea...I'm getting tired of looking at the crowd (11-13) of little glass tea light candleholders that I have near my kitchen sink...and that isn't even all of them! I could be using them! Tonight- the oven!