I've only used sheets, and I've bought both name brand and generic. I usually buy generic just because I always seem to run out of them when I need to buy 100 other things and don't have a lot of money. I have noticed that the store brands don't smell as stong or last as long. That's it though. I think I'll try the liquid spray idea next time for a change of pace! I always find good ideas from posts on this site!!!!