With higher temperatures and extended daylight hours contributing to increased insect and mosquito activity, experts are offering a variety of methods to keep pests at bay without resorting to sprays. These strategies include natural deterrents, physical barriers, and innovative gadgets.
According to Dr. Mojca Kristan, an assistant professor in medical entomology at the London School of Hygiene and Tropical Medicine, the current warm weather conditions are ideal for mosquito populations. She noted that mosquitoes thrive in warmth and require standing water to lay eggs, making the summer months optimal for their emergence and biting to obtain blood for breeding.
Natural Scents and Repellents
Certain natural scents can make individuals less detectable to mosquitoes or render areas less appealing to them. Daniel Steward, Managing Director at Shield Pest Control, recommends scents such as lemon eucalyptus, citronella, lavender, and peppermint. Lemon eucalyptus, containing PMD, is particularly effective, offering several hours of protection by interfering with mosquitoes' ability to detect human scent.
Citronella's compounds like citronellal, geraniol, and citronellol help mask scents mosquitoes use to locate people. Lavender, with compounds like linalool and linalyl acetate, is thought to reduce attraction, and its essential oil can be used in diffusers or diluted for skin application. Peppermint, containing menthol and menthone, can also disrupt mosquitoes' scent detection.
Physical Barriers and Home Remedies
Preventing insects from entering homes is considered a foolproof method. Insect screens on windows and doors offer a robust physical barrier. For those without screens, simple remedies include using cucumber slices in areas where ants are a problem, as ants reportedly dislike the taste.
White vinegar mixed with water in a spray bottle can be applied around window frames, sills, and doorways to deter insects. Adding essential oils like peppermint or lavender can enhance this effect. Bicarbonate of soda can also help neutralize odors that attract flies, particularly around rubbish bins.
Fresh herbs such as basil, mint, rosemary, and lavender, when placed on windowsills or in window boxes, can act as natural deterrents. Apple cider vinegar mixed with a drop of washing-up liquid in a bowl can attract and trap flies, while orange peel, due to its D-limonene content, can deter flies and other insects when placed near entry points. Combining orange peels with cloves can create a stronger repellent for outdoor settings.
Sealing small gaps and cracks around window frames with caulk or sealant can prevent pests like flies, ants, and spiders from entering. For busy doorways, magnetic or sliding screens offer a practical barrier without compromising airflow.
Gadgets and Specialized Products
While less effective against mosquitoes than repellents, electric insect traps and UV light devices can be useful for flying insects in enclosed spaces. Fans can also be surprisingly effective, as their airflow makes it difficult for weak-flying mosquitoes to land.
When using commercial insect repellents, experts advise choosing those with proven active ingredients such as DEET, picaridin, or lemon eucalyptus extract (PMD). Reapplication is recommended, especially during dawn and dusk when mosquitoes are most active.
Spray-free options include patches infused with essential oils like citronella or lemon eucalyptus, which can be affixed to clothing for localized protection, though their effect is generally short-lived. Bands and wristbands that release essential oils also offer limited protection, primarily around the wrist area.
Thermacell devices create a protective zone against bugs, most effective in calm conditions. Body oils, like AVON Skin So Soft, which contain ingredients such as jojoba oil and citronellol, have also been anecdotally found to deter insects.