Monsoon brings cool breezes and fresh rain, but it also brings mosquitoes, flies, cockroaches and termites looking for a way indoors. Several mosquito species carry diseases including malaria, dengue and chikungunya, which makes keeping them out more than a matter of comfort. Some of the most common home remedies for this, cinnamon, cloves, citronella and neem oil among them, do have real scientific support behind them, though usually in more specific and limited ways than popular advice suggests. Here is what actually holds up.
7 tips to keep flies and insects out of your home during monsoon
- Eliminating standing water is the single most effective step
According to the, Aedes mosquitoes, which spread dengue, prefer laying eggs in clean, shallow, still water, and the WHO specifically recommends draining and cleaning household water storage containers every week to break the mosquito breeding cycle. Checking AC trays, plant pot saucers, buckets and any other spot where water collects, and emptying them regularly, remains one of the most effective and well documented ways to cut mosquito numbers around a home.
- Sealing gaps and keeping food covered
Fitted mesh screens and sealed gaps around windows, doors and vents are standard, uncontroversial pest control practice, physically blocking entry points rather than relying on any repellent chemistry. Alongside this, food waste and exposed food are well known attractants for flies and cockroaches, so covering food, wiping counters and using bins with tight lids are standard hygiene practices that reduce what draws insects indoors in the first place.
- Damp wood is a genuine driver of termite problems
This one is well supported. Termites, both subterranean and drywood varieties, are strongly drawn to wood with high moisture content, since damp wood is easier for them to digest and often shows early signs of decay. Keeping wooden furniture dry and well ventilated directly reduces its attractiveness to termites, making this one of the more scientifically solid tips on the list.
- Neem oil has documented effects against termites
Multiple peer reviewed studies support this one. Research published in journals including has found that neem oil applied to wood significantly improves resistance to termite attack compared to untreated wood, and a separate study on Khaya senegalensis wood found neem treated samples were around 40 percent more resistant to termite damage than untreated wood. Neem oil is not a guaranteed cure for an active infestation, but as a preventive treatment on furniture, the research backs it up reasonably well.
- Cinnamon and clove work against stored grain pests specifically
Here the evidence is real but narrower than commonly claimed. A study published in the journal found that clove powder achieved 100 percent repellency against a common flour beetle at a specific dose, and other peer reviewed research has confirmed cinnamon oil shows strong repellent activity against weevils in stored grain. This evidence supports placing cloves inside containers of rice, lentils or flour specifically, rather than sprinkling cinnamon powder generally around a room to repel flies, ants or mosquitoes, a broader claim the research does not actually back.
- Certain essential oils do repel mosquitoes, with real limits
Peer reviewed research backs this up more than most home remedies. A study published found that catnip essential oil repelled more than 70 percent of mosquitoes for one to four hours even at low concentrations, performing comparably to DEET in several studies. A systematic review published in the also found citronella, lavender, peppermint and lemongrass oils showed genuine repellent activity against Anopheles mosquitoes. These oils work when applied to skin in tested concentrations, evidence for simply spraying diluted oil around room corners is much weaker.
- Humidity control remains sound general advice
Running exhaust fans and improving ventilation to reduce indoor dampness is standard advice for limiting conditions that attract both pests and mould, even though no single humidity percentage has been established as a universal threshold for insect activity indoors. Taken together, the strongest steps here remain eliminating standing water, keeping wood dry, and using neem oil, cinnamon or clove in the specific, narrow ways the research actually supports, rather than as broad, general purpose room treatments.
