To all: Yes, it matters which ones. Bounce is considered to be the superior ones or whichever others contain the relevant chemistry. it' not clear what does it. (It's not the static). The sheets are also a barier to assaults by slugs and snails, asnd have emany other similr uses. The post office (in some areas) has told mail carriers who are vulnerable to yellowjacket stings to tie one to their belt when they are in areas that might put them at risk. For those who want to know more: type in-- bounce uses-- to your search window . (I use Dogpile which incorporates Google) and the first item which comes up has a list. Cheers, Adam