- i always re-use GLASS containers with no problems - i tried yaley container wax and keep getting molting probably to much scent, not to happy with it, also i really didn't like the burning aspect. - i really liked the parrafin wax slabs yaley has but i don't think its for containers but add petro to it and i still use it as gift candles. Also throw some crisco in it they say it throws the sent better and it doesn't seem to deter the burning properties. i do use a large wick.