I have not had any problems to report w/ the 3 1000 watt fitco foggers that I have bought at party city over the past few years. I do make sure that I run them for a little while every other month or so but other than that I dont do anything special. I use all of them w/ trash can chillers, I do use the fog juice that is sol at guitar center
and it seems to work better than the stuff from spirit and the fitco stuff. I have not tried the froggy stuff but hope to this year. It sounds like foggers are just luck of the draw.