When the spray comes into contact with flying insects, the nerves and muscles of wasps all contract at once — causing an overwhelming exertion of energy. Essentially, the substances inside of wasp spray cause paralysis to the wasps and other flying insects, which forces the insects to drop to the ground. For quick reference, here are some of the industry leaders in wasp and hornet spray and what their main ingredients are:. Be safe!
So the first essential thing about wasp and hornet spray is the substances that comprise of it. The second is the after effect and how quickly these types of sprays work. For instance, the substance inside wasp and hornet spray are extremely effective once they come into contact with the insects.
The spray usually causes a very fast knockdown of the insects, which refers to how they go from flying and buzzing around — to the ground. Some wasps get coated much more than others once they get sprayed. When the wasps return to their hive coated in the wasp spray, they spread the substance to all of the other wasps inside of the colony — causing them to get covered in them as well. The substances are soaked up by the wasp nest as well, causing the spray to be extremely effective.
You can read more about how pyrethroids and pyrethrins work by clicking here link to epa. Most wasp sprays allow you to stand up to 15 — 20 ft away from a nest while spraying. The farther away you get with the spray, the more the stream of spray will loop and be harder to aim. Again, in some cases, you may have to get a ladder to spray the wasp nest which is where the sunglasses really come in handy. However, most quality sprays will have a spray distance of at least 20 Feet.
The ones that allow you to stand a little farther away, like the Spectracide spray, allow you to keep a slightly farther distance away from the nest. Of course, blasting a nest from 27 feet away takes some skill. The further away you are, the harder it is to aim the spray accurately, causing waste or, worse, leaving enough wasps alive to mount a counterattack. A thorough approach works best when using a spray. Keep the nozzle depressed and coat the entire nest to ensure all wasps are disabled to prevent any from retaliating or escaping to build a hive in some other location near your home.
Aerosol Foam sprays work similarly to standard sprays, only the liquid creates a foam on contact, trapping the wasps, then paralyzing them with chemicals.
While aerosol foams provide better coverage than standard sprays, they have shorter ranges of up to 20 feet. For smaller problems, a simple can of spray or aerosol foam will get the job done. If you have a recurring wasp problem, you may need a large supply of wasp killer on hand to keep the wasps at bay.
One bottle of liquid concentrate can make up to 40 gallons of spray, offering a much better value than the spray-ready products. Concentrates are also typically effective against a broader range of insects than canned sprays, allowing you to take out ants, roaches, and a whole host of other pests. Concentrates do have their downsides. You must mix the concentrate with water before using it, which can be a hassle.
The products below kill wasps on contact, with most allowing you to remain at a safe distance when doing so. This list includes some of the best wasp sprays from the most well-known names in pest control. This You can also stand well away from lower-level hives, minimizing the chances of being stung.
Raid also includes a higher percentage 0. This pack includes three In addition to killing hornets and wasps, this pesticide will also kill mud daubers and yellow jackets. This spray is safe for indoor or outdoor use, but keep it away from eating surfaces and food. Hot Shot kills on contact.
But there are times when a nest cannot be ignored, as everyone we spoke with acknowledged. According to the Centers for Disease Control and Prevention , between and , an average of 62 people died each year from hornet, wasp, and bee stings in the US. So, depending on your specific situation, the best option may be to call a professional. Paper wasps make small hanging nests that are often seen attached to the eaves of a house or a tree branch.
They typically live in ground nests, attics, or the cavity of a wall—and these, more than others, warrant more urgent action. Because yellow jacket nests are usually in hard-to-reach spaces, the best product to use is an insecticide dust , either puffed or poured directly into the entrance of the nest.
Sprays are generally ineffective for yellow jacket nests, remaining only at the entrance and not penetrating deeper into the colony. In fact, sprays may even make things worse with yellow jackets, since spraying the entrance to a nest in your walls may just drive the wasps farther into your house. The downside with dusts is that application requires close proximity to the nest entrance, which increases the chances of getting stung.
He recommended wearing a bee suit, and he shared more advice about how to remove a nest. Bald-faced hornets are responsible for the classic, volleyball-sized nests that often take the shape of a hot air balloon.
The experts we spoke with suggested calling a professional for bald-faced hornets, especially when the nest gets larger than the size of a baseball. Truly the stuff of nightmares. But after looking deeper into the situation, we discovered that the massive stinging insect is not a realistic threat for most at least not yet.
Murder hornets are a non-native species in the US, and coverage so far all centers on a few sightings of the hornets in the Pacific Northwest. At the moment, a containment effort is underway and is constrained to one or two counties in Washington state. There is no indication that the hornets have spread beyond this point.
And to keep up to date with this story, we suggest that you follow the Washington State Department of Agriculture. Containment is a possibility at this point. In the meantime, you can enjoy playing with a murder hornet toy. For aerial nests, the best option is a pyrethroid-based foaming spray that can shoot at least 15 feet.
These are quick and effective against the insects that are currently in the nest, and they typically leave a residue that will kill returning insects. We looked for sprays that were:. Pyrethroid-based: Our experts all recommend a pyrethroid a synthetic pesticide modeled after a compound found in the chrysanthemum plant as an active ingredient.
There are many equally effective pyrethroids in use, and we saw a number of different ones across the various brands. All of our experts agreed that there is not going to be much difference in hornet sprays. There are very few options beyond pyrethroid-based sprays.
We found some that use essential oils as an active ingredient, but those have downsides. Where you might not have to do that with a pyrethroid. Foaming: Merchant told us that foaming sprays can help protect you against the wasps and hornets. Non-staining: Paper wasps often build their nests under the eaves of a house, so a spray is likely to get all over the siding.
Some brands have a very watery foam that immediately starts running down the side of the house, increasing the residue left behind.
Others have very thick foams, which held their shape and simply dissolved like a handful of bubble bath. Able to spray a good distance: A can of wasp and hornet killer should have a good spray distance, to keep you as far away from the nest as possible. Most available sprays list a range of about 20 to 22 feet. Most were right around the foot mark. Safe to use: Pyrethroids are extremely effective against insects.
And anyone using them should take common-sense precautions, such as washing their hands afterward, taking into account who is nearby and where they are, and not spraying them directly into the wind or straight up at a nest. We also preferred products that had some kind of cap or safety latch on the spray—really anything that might deter a curious child.
Finally, some sprays are designed not to conduct electricity. We tested two and had very poor results. We did set different criteria for dusts: For a ground nest, or one that is in a wall cavity, a dust is a better option. Our experts told us that, like the sprays, the majority of the available dusts are going to be effective.
You definitely want one that will puff it out. We did not test the killing effectiveness of the sprays or dusts. Our experts, with their years of hands-on experience, agreed that these pyrethroid-based products are all going to have a similar effectiveness against wasps and hornets.
We could find no credible study that compared any of the active ingredients in the tested products for effectiveness, and, given the logistics of testing a pesticide, it was unrealistic for us to attempt it. We tested for the distance and focus of the spray, as well as any potential staining issues.
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