Pest Control in Wellington

DIY sprays and baits handle light ant or roach activity fine. Hire a professional for anything structural or persistent: termites, bed bugs, rodents inside walls, wasp nests in cavities, or repeat infestations. Pros have access to products and application methods retail products don't match, and misapplied DIY sprays can scatter colonies and make infestations harder to treat.

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.

For prevention, quarterly service is the industry standard — barrier treatments wear off after 60-90 days. Active infestations (roaches, mice, bed bugs) usually need visits every 2-4 weeks until cleared. Food businesses and homes backing onto woodland or water often move to monthly service.

That's usually the flush-out effect: insecticides drive insects out of harborage areas, so activity spikes for 1-2 weeks before dropping sharply. If you're still seeing live pests after 2-3 weeks, call the company back — most guarantee retreatment within 30-90 days.

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.

Most reputable firms include a retreatment guarantee — commonly 30-90 days for one-off jobs, and continuous coverage on service plans. Get the guarantee in writing, including what voids it (e.g. not following prep instructions, sanitation issues). 'Lifetime' guarantees usually mean an ongoing paid contract, not a one-time promise.

NZ has no established subterranean termite problem like Australia's — the main structural timber pest is borer (wood-boring beetle). Household pest spend goes mostly on rodents, wasps, ants, flies and cockroaches, so you can skip the termite barriers Australian sites talk about.

German and common wasp populations peak in late summer and autumn (January-April), and NZ has some of the highest wasp densities in the world in beech forest areas. Nest treatment typically costs $100-$300 and is best done at dusk when wasps are in the nest.