Which pests peak in which months across India?
India's pest calendar follows temperature, humidity and the monsoon rather than a single national pattern. Cockroaches and mosquitoes surge with the rains, flies peak in the warm pre-monsoon weeks, and rodents move indoors as winter sets in. Knowing the peak month lets a household — or a distributor planning stock — act before the problem, not after.
What does a month-by-month calendar look like?
| Months | Peak pests | Driver |
|---|---|---|
| Mar–May | Flies, ants, early mosquitoes | Rising heat before the rains |
| Jun–Sep | Cockroaches, mosquitoes, termites | Southwest monsoon, high humidity |
| Oct–Nov | Mosquitoes (dengue), bedbugs | Post-monsoon stagnant water |
| Dec–Feb | Rats, mice, silverfish | Cold pushes rodents indoors |
How does the picture change by zone?
- South and coastal (Kerala, Tamil Nadu, coastal Karnataka): humidity keeps cockroaches and mosquitoes active almost year-round, with two monsoon spikes.
- North plains (Punjab, UP, Delhi): sharp seasons — flies and mosquitoes in summer, a strong rodent surge in the cold December–January window.
- West (Maharashtra, Gujarat): a fierce June–September mosquito and cockroach season after a dry, fly-heavy summer.
- Northeast and East (Assam, West Bengal): a long, wet season stretches cockroach and mosquito activity from May into October.
Why should distributors care about the calendar?
Retail pull for insecticides is seasonal, so stock has to arrive ahead of the peak. A distributor should build up mosquito repellents and cockroach gel by May, before the monsoon rush, and shift the front shelf to rodent traps by November. Ordering after the peak begins means lost sales to whoever stocked early — timing the beat to this calendar can lift pest-category turnover by 20–30% in peak months.
What is the single best habit for households?
Treat before the peak, not during it. A pre-monsoon round of drain cleaning and gel baiting in May prevents the August infestation that is far harder and costlier to clear once breeding is in full swing.