Spells-Candles-After the spell

I have done quite a few candle spells and there is always a bit of the candle left after the spell has been done.  From the information that I have read the remnants of these candles should be buried somewhere in the ground somewhere on your property (since this was prosperity spell and you want prosperity "to come to your house/way".  I have gathered the remnants and will do just that when I can get out there and bury them.