Since 1922. Guaranteed to work! All natural. Works great on boats. Pesticide-free. Draws spiders from their hiding places. Used by professional exterminators. For residential & commercial use. Black widow, scorpion, hobo spider, brown recluse. Clean. Non-toxic. Easy-to-use. Harris Insect Traps use irresistible food attractants to lure insects. Pesticide-free, no chemicals. Non-toxic, clean and easy-to-use. Includes irresistible food attractants. Discreet. Slides easily under appliances & furniture. For residential & commercial use.