The Best Bug-Killing Gear | Reviews by Wirecutter

The Bug-A-Salt 3.0 has the look and feel of a Nerf gun, but it shoots a small burst of table salt that, theoretically, will kill a fly. It’s certainly entertaining to use, but it’s not very practical and, honestly, not all that effective. There were times when we could kill a fly in a single shot, but it often took two and sometimes three shots. Hornets and wasps typically took five or six shots to kill. The Bug-A-Salt is also for outdoor use only—we tested it indoors and salt just ends up everywhere. It’s good for a laugh or for sitting on a deck and picking off any flies that land on the railing, but beyond that, we’ll pass.