Pest Control in New Territories

Exterior barrier sprays typically remain effective 60-90 days, less in heavy rain. Gel baits keep working for weeks as insects share them. Rodent programs are about proofing, not just bait, so results last as long as entry points stay sealed. This decay is why prevention plans run quarterly.

For standard sprays and gels, you typically only need to stay out of treated rooms for 2-4 hours until surfaces dry. Fogging or flea treatments may require 4-6 hours away. Whole-structure fumigation (rare, mostly for termites or severe bed bugs) means vacating for 1-3 days. Your technician must give you re-entry instructions — ask if they don't.

Bait and traps knock down the current population, but permanence comes from exclusion: sealing gaps bigger than a pencil around pipes, vents, doors and rooflines, plus removing food sources. Good rodent jobs are quoted as a program — initial treatment, follow-up checks, and proofing — not a single bait drop.

A typical visit includes an inspection, interior treatment of kitchens/bathrooms/entry points, an exterior perimeter barrier spray, and a written report. It usually covers common crawling insects (ants, roaches, spiders). Rodents, termites, bed bugs, wasps and mosquitoes are almost always quoted separately — confirm what's on the ticket.

It depends on the pest. Wasp nests and one-off ant trails are usually solved in a single visit. Cockroaches, bed bugs, fleas and rodents almost always need 2-3 visits, because eggs laid before the first treatment hatch after it. Ask upfront whether follow-up visits are included in the quoted price.

Warm humid evenings from roughly April to June trigger termite swarms; winged termites entering near lights can indicate a colony in or near the building. Turn off lights, close windows, and if you find shed wings indoors repeatedly, book an inspection — treatment for an established colony costs HK$3,000-HK$12,000.

The building management or incorporated owners are responsible for common areas (refuse rooms, pipe ducts, lobbies); the FEHD handles public streets and markets. You only pay privately for treatment inside your own flat, so report common-area sightings to management first.