Here it is and ijimmy is right it is odorless and makes no noise. http://www.mosquitorepellent.com/pro...cordless.shtml

For general use-probably not hunting-there is a Cutter Bug-Free Backyard concentrate that you can spray all around and it is a tremendous wall against mosquitoes. I didn' t notice a smell, but there might be one. I just got back from fishing for redfish and specs in southwest LA and we mixed up and sprayed the stuff around the doors to the cabin and there were absolutely no mosquitoes near the doors. Looking out the windows you could see huge clouds of them. The mosquito sprayer truck pulled into the driveway and sprayed em good and it didn' t do anything but make them mad. The cutter stuff really works.