Pour remaining oil into an empty bottle with a screw on cap for proper disposal.
Do not pour the oil down a sink or toilet.
Pour a small quantity (1/4 tsp.) of high quality granular automatic dishwasher soap
Into the candle. Fill candle almost to the top with very warm water. Allow to set overnight.
The next day, pour out the soap solution and thoroughly rinse the inside with clean water from your tap. Repeat this rinsing process enough times to make certain all the soap solution has been removed and only clear water remains.
If possible, use mineral free bottled water to rinse. Remember, the soap solution
on your hands and outside surface may make your candle slippery, so hold carefully.
Remove as much water as possible from your candle. Put the candle upright on a cookie sheet and set in a moderately hot (325o) oven for about 30 minutes.
After 30 minutes, turn the oven off but do not remove the candle.
Allow the oven and candle to completely cool before removing the candle.
You should be able to take the candle out of the oven in 1-2 hours (after
it's been turned off). If there's any moisture left in the candle,
repeat the "baking" step (#5 & 6).
After cleaning the inside, and before refilling with lamp oil,
spray a soft cloth with a high quality glass cleaner and clean the outside of the candle.
If you avoid spraying directly onto the candle, there'll be less chance of the spray being misdirected in the inside of the candle through the wick hole.
Fill your candle with fresh lamp oil to the prescribed level -
and enjoy your sparkling candle! Remember, if you're also
replacing the wick at this time, you may have to allow time
(see instruction sheet) for the oil to be drawn up to the top of the wick.