Unless you wish to have the entire room covered in black residue and ash. I'd say waste of money, but it's much morę - it is a waste of everything around that may be destroyed or stained by it. Walls and ceiling are all covered in black dust, so is the furniture My friend was even blowing her nose in black after the candle was lit. The only proper use for it is outside, far away from any valuable thing you might have. The worst gift I ever got and I will be discouraging anyone from idea of buying it.
