What kills wasps instantly? Washing up liquid and water sprayed directly into the hive, pesticides and insecticidal dust are all effective methods for killing wasps within a few minutes.
Spray Soap and Water
Simply get a spray bottle and fill it with water and add a few tablespoons of fairy liquid. Then in the evening or at night when the wasps are the most calm you will want to spray at the nest. The way it works is the soap clogs the breathing so they die almost instantly.
Liquid Dish Soap
Another well-known wasp-killing concoction is dish soap and water.
Taking out a wasp or hornet nest requires courage, precision, and speed—and a product that can do its job while keeping you as safe as possible. For that, you'll need a can (or two, just to be sure) of a pyrethroid insecticide. Terro Wasp & Hornet Killer is a great place to start.
Some wasp removal experts say that you can handle small hanging nests with a bit of soapy water. Mix 2 tablespoons of dish soap in a spray bottle and fill with water. The soap will clog their spiracles, the pores that they breathe through, and will kill them almost immediately.
Wasps also don't like vinegar. As a wasp deterrent, some people place an equal mix of water and white vinegar in a spray bottle. They then spray the wasps to get them away. While this method may be somewhat effective, it's also dangerous.
Citrus - Citrus fruits like lemons and oranges can help deter wasps around your yard. Peppermint oil - Peppermint oil is one of the most effective essential oils for keeping wasps away. Citronella - Citronella oil is also effective, as it has a strong citrus smell that wasps do not like.
Use soap and water
Mix two tablespoons of dish soap into a spray bottle of water and spray it on the nests. The mixture will clog the wasps' breathing pores and kill them instantly.
Windex is very effective for killing most types of bugs inside of the home. It's a bit less effective on Wasps for some reason, but many will die and those that do not will be slowed enough that you can easily trap them or slap them.
Use the vinegar and dish soap mixture in a spray bottle to kill individual wasps. Carry a plastic spray bottle of the mixture with you while working in the garden or enjoying time outdoors to deal with pesky wasps on the spot. Spray the wasp until it is saturated and no longer moving.
Once any nests are removed, planting mint, citronella, thyme and some eucalyptus can help to keep wasps away from the area, or spray diluted peppermint oil under eaves or other areas where wasps like to make nests. (Wasps are not big fans of mint.)
Wasps have a strong sense of smell and dislike certain plants like peppermint, spearmint, basil, eucalyptus, cloves, geranium, thyme, citronella, bay leaves, and lemongrass. They are also repelled by vinegar, cinnamon, coffee grounds, and sliced cucumber.
They normally get angry when they feel threatened. It could be your constant waving of arms when you try to get rid of them. These actions make them feel threatened hence making them angry. Once wasps get angry, their defence mechanism releases pheromones that signal other wasps in the colony.
The best method of wasp control is to locate the nest, or nests, in the surrounding area and eradicate them using an insecticide registered for the purpose. It is recommended that treatment of the nest occurs early in the morning or at night when wasps are less active.
Use WD-40
WD-40 can be use to both kill wasps and stop them from nesting. Wasps are territorial, so will return to the same nesting spot every year. To keep wasps from returning, spray any former wasp next spots with WD-40. Apply it liberally underneath gutters, and anywhere you have spotted wasps congregating.
Plants like citronella, spearmint, marigolds, and geraniums are all thought to be wasp deterrents. Additionally, essential oils such as peppermint, clove, geranium, and lemongrass may have some effect when sprayed on places where wasp nests used to remain.
In a bowl, add lemon juice as well as baking soda to make a mixture. Spray the juice directly into the wasp nests and into every opened hole. If there are any wasps inside the nest, they will die.