Pyranha Nulli-Fly Horse Insecticide Spray, 32-fl oz bottle

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About This Item

Details

  • Formulated to ward off a variety of insects and pests
  • Scented with citronella.
  • Water-based formula will not attract dust and grime like oil-based products.
  • No mixing—ready to use!
  • Easy application—simply spray directly onto your horse’s coat or wipe it on with a sponge.

Ingredients

Instructions

Frequently bought together

Questions & Answers

1 Customer Questions

Is this safe for donkeys?

Answer by Susan • Jul 06, 2024
Yes, I use it on mini donkeys.
Reviews
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4.1
Rated 4.1 out of 5 stars
73 Ratings
Terms & Conditions

27 Customer Reviews

Rated 5 out of 5 stars
By rosie on Dec 30, 2025

Pyranha works

this is a killer fly spray for horses flies, deer flies, and house flies and gets a few gnats even. Great product

this is a killer fly spray for horses flies, deer flies, and house flies and gets a few gnats even. Great product

Rated 2 out of 5 stars
By Diane on Oct 22, 2025

Sprayer stopped working on the bottle

The sprayer on the bottle stopped working before it was empty. I had to purchase my own bottles and transfer the liquid into my own sprayer to finish it. The fly

The sprayer on the bottle stopped working before it was empty. I had to purchase my own bottles and transfer the liquid into my own sprayer to finish it. The fly spray itself did an okay job of repelling the flies.

Rated 3 out of 5 stars
By Breanna on Jul 8, 2025

Not working for us

I've been a Pyrana fan for years, but since moving to CO, this spray is just not cutting it, no matter how much I put on the horses. We have these tiny biting flies

I've been a Pyrana fan for years, but since moving to CO, this spray is just not cutting it, no matter how much I put on the horses. We have these tiny biting flies that seem to be immune to fly spray and leave itchy welts all over my horses from their bites. Fly sheets help but the flies get up under them. So if you're in CO and have the awful tiny biting flies, good luck, but this spray isn't it.

Rated 2 out of 5 stars
By Amanda on Jun 27, 2025

Faulty bottle

This spray works long enough to ride but isn’t strong enough to last all day. The sprayer won’t stay attached to the bottle. It’s only a single thread and isn’t

This spray works long enough to ride but isn’t strong enough to last all day. The sprayer won’t stay attached to the bottle. It’s only a single thread and isn’t strong enough to hold it on. It came apart and spilled a lot on the ground. I was unable to keep it attached and ended up pouring it into an old bottle

Rated 1 out of 5 stars
By maricela on Jul 2, 2025

Do not buy!

Upon opening the package we lost half the solution. The sprayer fell off. We haven't reached out about this yet but today again while using it it fell off again

Upon opening the package we lost half the solution. The sprayer fell off. We haven't reached out about this yet but today again while using it it fell off again losing the rest of the solution. Packing of this product is cheap. Don't buy

Rated 5 out of 5 stars
By April on Apr 3, 2025

Great product that works

I have used the oil-based Pyranha fly spray successfully for years. Water-based sounded interesting so I got some. The ingredients are nearly the same. Just for

I have used the oil-based Pyranha fly spray successfully for years. Water-based sounded interesting so I got some. The ingredients are nearly the same. Just for kicks, I sprayed my horse's left side, and both legs with the Nulli-fly spray. I did the same on her right side with the product I usually use. She had flies bothering her before I sprayed and there were none on either side after 2+ hours. It will be interesting to go out tomorrow and see if Nulli-fly has the staying power that the other product does. I might end up using the oil-based spray when I know there will be rain and saving the water-based product for days when it wouldn't get rinsed off. We shall see.

Rated 5 out of 5 stars
By Cathy on May 4, 2025

Made by Pyranha

I am a long time Pyranha user...from many horses now down to one guy left who hates bugs...I was looking at the Chewy site to reorder some Pyranha and saw this new

I am a long time Pyranha user...from many horses now down to one guy left who hates bugs...I was looking at the Chewy site to reorder some Pyranha and saw this new version so ordered some...it seems to work well on this anti-bug horse...so my 5 stars.

Rated 1 out of 5 stars
By Cheryl on Jun 3, 2025

Not delivered

Say it was delivered but got a weird product that I did not order. One star only because it wouldn’t let me pass that step.

Say it was delivered but got a weird product that I did not order. One star only because it wouldn’t let me pass that step.

Rated 5 out of 5 stars
By ALEXANDRA on Apr 4, 2025

Best oil based fly spray

I can only use this on my horses legs because it can cause welts on their body, especially in the heat and sun. But it works great for the legs that get eaten up

I can only use this on my horses legs because it can cause welts on their body, especially in the heat and sun. But it works great for the legs that get eaten up by bugs. I have a very delicious horse (apparently, according to the flies) and this is a life saver

Rated 1 out of 5 stars
By rachel on Jun 13, 2025

Love the product hate the bottle

2 time I have bought this and the bottle was leaking and when I when to spray it on my horse the spray part broke

2 time I have bought this and the bottle was leaking and when I when to spray it on my horse the spray part broke