Pest control in Kelaniya

Kelaniya sits on the Kelani river a short way north east of Colombo, and almost everything we are called about here traces back either to the river or to the industry along it. It is not a uniform suburb. There is the area around the Raja Maha Vihara, which draws large numbers of visitors and has the food stalls and small eating places that come with them; there is older residential housing on the lanes off the main road; and there is a substantial belt of factories, workshops and warehousing towards Peliyagoda and the highway.

Rodents are the leading call and the industrial belt is why. Warehouses and workshops hold material, offer shelter and generate waste, and the river bank behind many of them gives a continuous sheltered run right up to a building. In practice the fix is almost always finding which gap is being used rather than adding more bait: a worn shutter seal, a service penetration, a broken air brick at ground level. We would rather close it than commit a site to baiting for ever.

Mosquitoes are the second issue and they are seasonal in a way that catches people out. When the river rises after heavy rain the low ground either side holds water for days afterwards, and the mosquito population that follows is bred largely within a short distance of the houses being bitten. On a property the useful work is the water you can actually control: tanks, gutters, drums, tyres, the saucers under plants, the low corner of a yard that never quite drains. We clear those first and treat second, because the reverse buys you one comfortable evening.

Termites turn up in the older houses along the lanes, particularly where a building sits low and the ground around it stays damp for weeks after the rains. Timber in contact with soil, at a door frame or a verandah post, is the usual route in, and the affected section is often smaller than the owner fears.

The food premises around the temple have the same pressure as any busy eating place: warmth, continuous food and long hours, which suits cockroaches. Gel goes into the voids, hinges and gaps behind equipment rather than across preparation surfaces, so a kitchen keeps working while it is dealt with.

Kelaniya is close enough to our Wattala base to be an easy area for us to reach and to return to, which matters most for the industrial sites where a programme means regular visits rather than a single treatment.

Local geography matters more here than in most suburbs. The stretch around the Raja Maha Vihara and Kelaniya railway station is dense, mixed use and busy for most of the day, and the pest pressure there is commercial: eating places, small shops and the waste they generate. The lanes running towards Dalugama and the university area are more residential and older, with the single storey houses and mature gardens that bring termites and ants rather than cockroaches. Towards Peliyagoda and the expressway interchange it becomes industrial almost entirely, and the work changes to warehouses, workshops and documented rodent programmes. A quotation for one of those is not the same job as a quotation for a house two kilometres away, which is why we ask what the property is before saying anything about price.

The commercial sectors here are worth naming because they need different things. Food premises need treatments compatible with staying open. Warehousing needs a plan, numbered stations and a written record. Workshops and light industry usually need proofing more than they need product, because the building is what is letting things in. We would rather tell a site that its real problem is a door than sell it a quarterly visit.