- Feb 11, 2007
- washington, pa
all this hi tech crap gives me a headache !. alls you gotta do is keep a fairly fresh potato near your graver holder. this protects the entire lot. give it a try. the potato is effective until it loses about 30% of its' original mass due to water loss. also cheaper on yer electric bill, no danger of shock, and yer gravers are always ready for service.