The most effective wasp deterrents combine prevention (removing food sources like fallen fruit, covering compost, securing trash) with strong, natural scents that wasps dislike, such as peppermint, clove, lemongrass, and eucalyptus oils (used in sprays or on cotton balls) or planting herbs like mint, citronella, and basil, with some people finding success with blue paint for nests. For immediate action, burning coffee grounds can also work, say users on Reddit.
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.
WD-40 kills wasps primarily by suffocating them, as its low surface tension allows it to spray into the tiny breathing holes (spiracles) on their bodies, blocking oxygen intake, while its oily nature also incapacitates their wings and disrupts their nervous system, making them unable to fly or function. While it's not designed as a pesticide, its lubricating and penetrating properties effectively disable insects, often quickly grounding them for easy disposal or death.
Prevention and protection
One long term method is growing plants such as citronella, eucalyptus, mint, and wormwood, which have scents that naturally repel wasps. It's also important to keep on top of food sources in the garden, because certain types of food – usually sweet foods and meats – are appealing to wasps.
To eliminate the nests and wasps, using a wasp and hornet killer like Raid can be effective. While it's impossible to completely keep them away, you can reduce their presence by planting certain plants and utilizing vinegar, cinnamon, coffee grounds, and sliced cucumber around the exterior of your home.
Wasps hate strong, pungent smells, especially from essential oils and herbs like peppermint, eucalyptus, citronella, and clove, as well as sharp scents from vinegar, cinnamon, and citrus, which can mask food odors and disrupt their navigation. Planting these herbs or using diluted essential oils in a spray bottle can naturally deter them from outdoor areas.
Wasps' weakness for sweets may work in your favour. Lure them to a dish of water and apple juice laced with dish soap: they'll drown.
Wasps generally do not return to the same spot every year, but if you have a suitable area to build a wasp nest, they may return to the same area. What time of day are wasps most active? Wasps are most active midday when it's warmest outside. They are least active between dusk and dawn.
According to the EPA, coffee grounds are a safe and effective way to keep pests away. Coffee grounds can help repel not only mosquitos but also other annoying insects like wasps and bees.
Suggested products
Yes, you can kill wasps with dish soap. The soapy water can also kill bees and hornets. Dish soap works because it helps the water get through the exoskeleton of the wasp, which can then drown the stinging pest.
You can do your own home pest control with Yates Home Pest Blitzem! Wasp Killer & Nest Destroyer. It kills Wasps on contact and destroys the nest. It's ready-to-use, fast-acting, and sprays up to 4 m.
Wasps do not reuse old nests. When the wasps are dead, a pest controller can remove the old nest. This should be done during September, October or April, to minimise the risk of disturbing bats. Any dead wasps in the loft can also be swept up at this time.
These compounds do have some insect-repelling properties. However, the concentration in dryer sheets may not be strong enough to be truly effective. In practical settings, dryer sheets might have some impact, but they aren't foolproof.
Some wasps create ground nests, so you may find them buzzing around in your lawn and landscaping. Some wasps create nests in voids, and you may find them hovering around structural gaps. Some wasps create aerial nests, and you may see their nests under roof lines or on the ceiling of your porch.
Generally, peppermint oil will keep wasps away for up to two weeks. To maximise the effectiveness of peppermint oil, it should be applied directly to areas where wasps are likely to enter, such as windows, door frames, and other cracks and crevices.
While it hasn't been scientifically proven, Irish Spring soap could be an effective DIY pest-repellent hack." The most recommended and popular way of using soap for insect repellent is by grating a bar and scattering the shavings in any area where the bugs tend to swarm.
Repel garden pests
Luckily there's a natural way to keep them out with used coffee grounds. The grounds work as a deterrent for all sorts of bugs including slugs, snails, mosquitoes, fruit flies, beetles, bees, and hornets.
Key Takeaways
August to September – This is the point at which the behaviour of wasps begins to turn a little more nasty. The queen wasps will be leaving the nest to find hibernation spots, leaving the workers without a nest to serve, causing them to roam and become desperate.
Wasps typically don't sting unprovoked, even when you're sleeping. However, they become defensive if they feel trapped, such as when you roll over them in bed or disturb bedding where they've landed.
Typically, adult wasps might remain active near the site for about 24-48 hours post-destruction as they search for food sources or try to locate another nesting area. During this time, they can become increasingly aggressive since they're confused and disoriented by the loss of their colony's structure.
The fact is, ordinary liquid soap in a spray bottle works as well as anything I've ever tried when it comes to dropping and killing wasps around the house.
The brains of wasps can recognize facial patterns very much as humans do. Turns out wasps can tell their own family members apart. They can also spot wasps who aren't part of the family, but are invading to steal food. Now entomologists think that wasps may even be able to recognize and remember individual humans.
Although there is no science backing the concept that wasps seek revenge, it has been proven that they will rally together to protect their territory and colony.