Blow Fly Control

Most Effective Products

Supreme IT Insecticide
Suspended Concentrate
As low as $54.99
Pyrid Insecticide Aerosol
As low as $27.99
Glue Trap
As low as $8.05
Keith's Pro Tips

"Remember that the most important part of removing an infestation of blowflies is finding the source of the infestation and getting rid of it. This is half the battle when it comes to Blow Fly control. "

Blowfly Control: How To Get Rid of Blowflies

This page is a general Blow Fly control guide. Using the products and methods suggested you will get control of Blowflies. Follow this guide and use the recommended products and we guarantee 100% control of Blowflies.

Blowflies, also known as bottle flies, are larger flies known for their metallic bluish-green color. These flies create a very audible buzzing sound while flying and typically scavenge around rotting meat or strong odorous foods. Blowflies tend to be around urban areas and aren’t typically found indoors. When they are indoors, this could be a big problem as they may breed and lay eggs which would cause a considerable infestation.

Blowflies can be found all over the world and emerge in nearly any area that is occupied by humans. Blowflies get the “blow” part of their name from infesting rotted carcasses of dead animals during their larvae/maggot stage when the carcass is in a bloated condition. Blowflies lay hundreds of eggs on rotting flesh which will grow into larvae and eat the flesh until there is nothing left.

Blowflies commonly gather around dead animals and are often discovered near meat processing plants, garbage dumps, and slaughterhouses. They typically enter homes when they detect filth or food indoors and will come from near and from far to feast, usually through any gaps and openings around the home. Most people who deal with Blowflies usually have a rodent problem.

If you have a Blowfly problem around your home, our DIY guide below will show you how to eliminate the infestation using expert techniques and affordably priced professional-grade products.

Blowflies can invade homes if the sanitation around the property is not kept up. Leaving pet droppings, not taking out the trash, and leaving decaying organic matter in the home can attract Blowflies. They can also enter homes through small cracks and holes on the outside of your structure.

Blowflies are capable of spreading many diseases through their constant eating habits. They have been known to transmit cholera, typhus, and dysentery, and even salmonella to food serving surfaces and eating utensils.


blow fly identification how to get rid of blow flies

Start by identifying and being certain that the pests you are encountering are Blowflies. Blow Flies are identified by their metallic iridescent color with green and yellow hues. They are also slightly larger than your average fly, measuring in at half an inch in length. Under a magnifying glass, you might be able to detect small hairs on the body.

Another simple way to identify them is by observing where they are found. Blowflies are most commonly found near dead animals and around manure and garbage, which makes them a staple in farms and around livestock.

Use the description and image above to help you in correctly identifying Blowflies on your property. If you are not totally sure, contact us and we will assist you with proper identification. 


inspection blow flies

After you confirm that you are dealing with Blowflies, you can proceed with an inspection so you can gauge how big of an infestation you have and where to focus your treatment applications.

Where To Inspect

Outdoors, Blowflies can be spotted around garbage bins, around your yard where there may be organic matter or feces, and near compost piles. Blowflies found indoors may mean something is decaying close by. Focus your search in kitchens, under and around appliances, near garbage bags, or even inside the light fixtures of the home.

What To Look For

You're looking for animal odors, animal carcasses, or decaying or decomposing material (garbage, feces, etc.). Inside your home look in all the rooms where Blow Flies have been seen, see if you can smell any foul odors, by following the smell you might be able to pinpoint the location of the carcass. Commonly, Blowflies may be present because a rodent may have died behind a wall or in a crawl space, attracting Blowflies from outside.

In the yard, search for excessive animal droppings, inside garbage bins, and in compost piles if you have them. If you are able to locate the source of the infestation (animal carcass, garbage, feces, etc.) you must remove it from your property. If you managed to pinpoint the location where they are most commonly found, this is where you will apply treatment.


Once you have discovered Blow Fly activity, it is time to begin treatment. Remember to read all product labels and follow the application instructions on these labels and stay safe by wearing personal protective equipment (PPE).

To achieve complete control of Blowflies, locate the rotting source that is attracting the Blowflies and sanitize your home. Afterward, trap any remaining Blowflies with Musca-Stik traps. As an added measure of control, spray your yard and perimeter with Supreme IT Insecticide and treat lingering Blowflies indoors with Pyrid Aerosol.

Step 1 - Locate The Breeding Source and Conduct Sanitation

blowfly breeding grounds in yard

Before utilizing insecticides, you need to get rid of Blowfly breeding grounds that are attracting Blowflies to your property to begin with.

Start by cleaning your kitchen, bathrooms, and taking out the garbage can. Make sure there are no spills or leftover trash at the bottom of the garbage cans. Get rid of rotten or uneaten fruit or food that might be attracting blowflies. Seal all foods in plastic containers. Clean out litter boxes if you have them. If you're able to find the animal carcass or source of the infestation get rid of it and put it far away from your property.

In the yard pick up after your pets and get rid of their excrement, and if you have one, cover or get rid of your compost pile.

Step 2 - Trap Flies with Musca-Stik

Hanging Musca-Stik to trap Blowflies

Musca-Stik is an insecticide-free trap that uses a combination of bright orange paper, pheromones and glue to lure and capture flies. To use, sprinkle the supplied attractant into the catch basin at the end of the stick. You can then hang the stick in areas where you have seen fly activity.

Step 3 - Outdoor Treatment with Supreme IT Insecticide 

reclaim it treatment blow flies

After cleanup, most of the Blowflies will leave the premises. To make sure they don't stick around or return spray Supreme IT Insecticide. Supreme IT is a powerful insecticide that targets more than 75+ insect pests and that it both repels and kill flies away from your property. It also has a residual (or long-term effects) that will last for up to 90 days.

Determine how much Supreme IT you will need to mix by calculating the square footage of your selected treatment area. To do this measure (in feet) the area length and width and multiply the two values (length x width = square footage). 1 ounce of Supreme IT with a gallon of water can treat 1,000 sq. ft. Mix the appropriate amount of Supreme IT based on your calculations inside your pump sprayer with water.

Conduct a perimeter treatment around your property by spraying 3 feet up and 3 feet out from the foundation of your structure. While spraying in this manner, also target window frames, door frames, eaves, soffits, rain gutters, fascias, garage doors, electrical/plumbing penetrations, and cracks and crevices.

Keep people and pets away from the areas treated until 2 to 4 hours have passed.

Step 4 - Indoor Treatment with Pyrid Aerosol

pyrid treatment blow flies

Pyrid Aerosol is a pyrethrin aerosol designed for quick contact kills of various pests, including Blowflies. Use the Pyrid Aerosol as a space spray where you have seen insect activity. The product does not have a residual, so flies will have to come in direct contact with the spray to be affected.

Apply at the rate of 1 to 3 seconds per 1,000 cubic feet. Start where Blowflies have been seen (kitchen, bathrooms, near garbage bags) by spraying toward the ceiling and making your way to the front. Do not let people or pets enter the home until 15 minutes have gone by and you have opened windows, turn the air conditioner on, and have properly ventilated your whole home. Also, wipe food serving counters clean after ventilating the home.


prevention blow flies

After you have successfully removed the Blowfly invasion, you will want to make sure they don't make a return. Preventative measures should be put in place, such as maintaining a regular cleaning schedule by taking out the garbage daily, wiping counters, picking up after your pets, and cleaning and spills that develop. Keep all foods in tight-fitting plastic containers and do not let fruits rot away and attract possible flies.

Keep your bathrooms clean and do not let mildew build up in the tub or shower area. Use caulking or copper mesh to seal any crack and crevices on the outside of the structure or near windows, to keep flies out of your property. Finally, spray Flex 10-10 every 90 days on the outside of your structure, to keep flies and other insects off your property.

Key Takeaways

  • Blowflies are a disgusting pest that often invades areas where there is decaying filth like garbage, dead animal carcasses and manure.
  • To get rid of Blowflies, locate an eliminate the filth source that is attracting the pest then apply a combination of Musca-Stik traps, Supreme It Insecticide and Pyrid Aerosol to kill the invading population.
  • Prevent Blow Fly reinfestations by maintaining a good sanitation schedule and sealing cracks and crevices around your property to make it harder for Blowflies to sneak in. 
Questions and Answers
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    Solutions Electric Sprayer 1.5 Gallon
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