DE-FLYSMART INSECTICIDE APPLICATOR FOR CATTLE

Automatic fly control for beef cattle, one animal at a time.

De-Fly turns a standard 12 volt spot sprayer into a walk-through applicator. Each animal receives one measured dose of spray as it passes through an opening on its normal trip to water or mineral. No gathering, no chute work, no internet required.

Buy the kit, $399How it works
De-Fly controller 12 V, WiFi settings 12 V batterywith solar maintainer Photo eye 1entry side, with reflector Photo eye 2exit side, with reflector 12 V pumpcustomer's spot sprayer Three nozzlesbelly, side, top Phone, over WiFi

What De-Fly does

One dose per animal

Two photo eyes detect each animal entering from either direction. The controller runs the pump for a set time and will not spray again until the opening is clear. An animal that stops in the opening is limited to the maximum spray time.

Uses standard equipment

Runs any 12 volt diaphragm pump and any nozzle bodies. A 25 gallon 12 volt spot sprayer package covers the tank, pump and hose. The rest is standard farm store inventory.

Off-grid, set up from a phone

A 12 volt battery with a solar maintainer runs it indefinitely. The controller broadcasts its own WiFi network; settings, test spray and head count are handled from a phone browser with no app and no cell service.

Mounts for whatever your opening is built from

Every nozzle mount carries the same slot for the TeeJet 3/8 in nozzle body, and every Straight mount comes in a Sensor version with a 3/4 in hole for the photo eye. Clamps for round pipe, square tube, T-posts, round or wood posts, and flat steel.

Pipe clamp nozzle mount

Pipe Clamp

1-5/8 to 2-7/8 in pipe, tube gates, panels

T-post nozzle mount

T-Post Mount

Standard 1.25 and 1.33 lb studded T-posts

Strap mount

Strap Mount

Any round post, wood posts, odd pipe

See all mounts

What is in the box

  • De-Fly controller in a weather-resistant enclosure with labeled screw terminals for battery, pump and photo eyes.
  • Two photo eyes with reflectors, one for each end of the spray zone.
  • Documentation: owner's manual, wiring diagram and recommended buy list.

Nozzle and sensor mounts are sold separately so you can match them to your gates and posts. The customer supplies the spot sprayer, nozzles, battery and solar maintainer; the buy list shows what to get and where.

De-Fly controller kit

$399

Controller, two photo eyes with reflectors, documentation. Ships from Texas.

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Common questions

Will an animal get sprayed twice, once at each photo eye?

No. The two eyes act as one detector. An animal breaks the near eye, receives one spray, and passing the far eye on the way out does nothing because the controller does not reset until the opening has been empty for the re-arm time.

Does it need internet or cell signal?

No. The controller creates its own WiFi network that a phone connects to directly at the opening.

How many head can it handle?

There is no limit. Cattle walking through in single file each trip the beam and each receive their own dose.

How much power does it use?

About 1.5 amp hours per day for the controller plus a small amount each time the pump runs. A 12 volt deep cycle battery with a 10 to 20 watt solar panel runs it indefinitely.

What chemical does it use?

Any insecticide labeled for use on beef cattle, mixed and applied according to the product label. Water-based and oil-based livestock sprays both work with a standard diaphragm pump.