View on LOZ Suggested Retail: $39.98. Flowtron BK-40D Electronic Insect Killer, 1 Acre Coverage,Black. Flowtron's lantern-style insect killer uses nontoxic ultraviolet light to eliminate mosquitoes, biting flies, and other insects over a 1-acre area. The insect killer is cleaner and safer than its chemical counterparts, and its patented non clogging killing grid eliminates the grid clogging that can short-circuit the unit or cause flare-ups of insect remains. The insect killer features high-impact construction and a protective outer enclosure to prevent children, pets, birds, or wildlife from contacting the charged grid.. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.