Product Overview More people buy Flowtron than any other brand. Which isn't surprising because Flowtron products are the best you can buy They're designed and built to work effectively and efficiently year after year. Flowtron's FD-15 Mosquito Guard Citronella Dispenser is great for patios, decks, barbecues, picnics, camping, fishing trips - anywhere you are.. The citronella scent emitted from the nonpolluting Flowtron FD 15 citronella dispenser may smell pleasant to you, but it confuses mosquitoes and biting flies. Naturally masking the human attractants these insects use to find you and start snacking, the citronella dispenser keeps you from getting bitten without the use of sprays, repellents, torches, or candles. This unit measures 5-1/8 inches in length, stands 3-3/8 inches high, and features an instant on/off switch, an internal fan, and a replacement citronella cartridge. Designed for outdoor use only, the device is portable so you can take it on a picnic or camping, or you can wall-mount it. Features Protects against mosquitoes, blackflies, and biting midges Emits a concentrated, non-polluting fragrance found naturally in citronella oil Convenient "on/off" switch for instant control Use indoor or outdoor - covers up to 12 feet Operates on one D-cell battery (not included) Details Product Dimensions: 6 x 5 x 6 inches Item Weight: 7.2 ounces Shipping Weight: 7.2 ounces Manufacturer: Flowtron Item model number: FD-15