What Is a Salt Gun? How It Works and What It’s Used For
Last updated: October 28, 2026
A salt gun is a hand-held, spring-powered blaster that fires a small spread of ordinary table salt to knock down flies and other small insects at close range, usually from about 2 to 3 feet. It needs no chemicals, and most pump-action models need no batteries. People also call it a salt blaster, a fly salt gun or a salt shotgun.
How does a salt gun work?
Most salt guns are pump-action:
- Load: pour dry table salt into the hopper on top.
- Pump: pulling the pump compresses a spring and lets a measure of salt drop from the hopper into the chamber.
- Fire: pulling the trigger releases the spring, which drives a burst of air through the barrel.
- Spread: the salt leaves the barrel as a short, widening cone. Any fly inside that cone gets hit.
The salt does not poison the fly; the impact knocks it down, usually dead or stunned. Because the shot spreads, you do not need a pinpoint hit, which is why a salt gun is more forgiving than a swatter.
Why distance matters: too far and the salt slows down and spreads too thin. Too close and the cone has not opened yet, so the air blast can push the fly aside. Most owners find 2 to 3 feet works best.
What is a salt gun used for?
- House flies on patios, decks, porches and around the grill: the main job.
- Horse flies and deer flies near barns, stables and farms.
- Mosquitoes and moths, especially with a laser sight.
- Small spiders at close range.
- Fun: owners often say the fun is why they actually use it, from family contests to keeping score on the patio.
It is not made for wasps, hornets or bees, and it does little against hard-shelled bugs such as beetles and cockroaches. See the pest-by-pest guide.
Does a salt gun really work?
Yes, at close range on soft, small flying insects. The honest limits are that one shot is one fly, some flies take a second shot, and it will not fix an infestation: if you see dozens of flies, something nearby is breeding them. Remove the source and use the salt gun on the stragglers. More detail: does salt kill flies?
Types of salt gun
| Type | How it works | Good for |
|---|---|---|
| Pump-action | A spring set by pumping; runs on table salt | Everyday fly control |
| Pump-action with laser | Same, plus an under-barrel aiming dot | Mosquitoes, small flies, low light |
| CO2-powered | Gas cylinders, sometimes pre-filled salt cartridges | More power for tougher bugs; higher running cost |
Not sure which to choose? Read how to choose the best salt gun.
Is a salt gun safe?
Used sensibly, yes. Wear eye protection because salt can bounce back, never aim at people or pets, and keep it away from children. Full guide: is a salt gun safe?
Try one
The Bug-A-Buster range covers all three styles of pump-action salt gun: the 2.0, the 2.0 with laser and the upgraded 3.0 with laser, in 10 colours, all at $47.99.
Salt gun parts and terms, explained
- Salt reservoir (hopper): the chamber on top that you fill with dry table salt. A small amount is fed into the barrel for each shot.
- Pump / cocking handle: pulling it back compresses a spring that drives the air blast. No batteries or gas are needed for this part.
- Trigger: releases the spring so a burst of air pushes a spread of salt grains out of the barrel.
- Pop-up sight: a flip-up aiming aid on Bug-A-Buster models that helps you line up short shots.
- Laser (Laser models only): projects an aiming dot and runs on 3×AAA batteries, which are not included. The salt-firing mechanism itself still needs no batteries.
- Textured grip: helps you hold steady when aiming at a fly on a wall or counter.
Who a salt gun is (and isn’t) for
A salt gun suits adults who deal with a handful of flies at a time on porches, patios, garages, barns and kitchens, and who want a chemical-free option they can aim. It is not a solution for a large infestation; for that, find and remove the breeding source first (bins, compost, pet waste, standing water) and use traps alongside. Bug-A-Buster salt guns are sold for ages 18+.
FAQ
What is a salt gun?
A hand-held, spring-powered blaster that fires a small spread of table salt to knock down flies and other small insects at close range.
How does a salt gun kill flies?
By impact. The salt does not poison the fly; a fast spread of grains hits it and knocks it down, usually dead or stunned.
How far does a salt gun shoot?
The salt travels several feet, but it only has the force to drop a fly up close. About 2 to 3 feet is the sweet spot.
What is a salt gun used for?
Mainly house flies, plus horse flies, mosquitoes, moths and small spiders. It is not meant for wasps, bees or hard-shelled bugs.
Do salt guns need batteries?
Pump-action salt guns do not. On models with an aiming laser, only the laser uses batteries.
More salt gun guides
- Best salt gun for flies (2026 buying guide)
- Does salt kill flies?
- Best salt for a salt gun
- Salt gun vs bug zapper vs electric swatter
- Salt gun for mosquitoes, spiders and roaches
- Is a salt gun safe?
