This guide covers what professional mosquito spraying actually involves, what separates reputable companies from unreliable ones, and the seven questions to ask before you book. For service details, see our GTA mosquito control service.
What Professional Mosquito Lawn Spraying Actually Involves
When people search for "mosquito spraying companies near me," most assume the service involves spraying the lawn itself — open grass — with a product that kills mosquitoes. That's not what professional barrier spray does, and companies that spray your grass are wasting your money.
Mosquitoes don't live in open grass. They rest in vegetation — the underside of leaves, shrubs, hedges, ornamental grasses, and fence-line plantings — during the heat of the day. A professional treatment targets every one of those resting surfaces with a residual product that kills mosquitoes on contact and keeps working for up to 30 days after the visit.
| What Gets Treated | Why |
|---|---|
| Undersides of all shrubs and hedges | Primary daytime resting habitat for adult mosquitoes |
| Ornamental grasses and garden borders | Dense foliage = cool, shaded resting spots |
| Fence lines and property perimeter | Entry point for mosquitoes arriving from adjacent properties |
| Vegetation up to 10 feet high | Mosquitoes rest at multiple canopy levels |
| Shaded areas under decks and overhangs | High humidity microclimates attract resting mosquitoes |
7 Things to Check Before Booking a Mosquito Spray Company
1. Health Canada–Approved Products
In Canada, every pesticide used for residential pest control must be registered with Health Canada under the Pest Control Products Act. Ask for the product's registration number before you book. A reputable company provides this without hesitation. Any company that can't or won't name the product they're using is a red flag.
2. Liability Insurance
Professional pest control companies carry commercial general liability insurance. Ask for a certificate of insurance before work begins. Companies operating without insurance leave you potentially liable for any property damage or injury claims arising from the treatment.
3. A Written Free Re-Spray Guarantee
The best mosquito spraying companies stand behind their work. This means a written commitment to return and re-treat if mosquitoes come back within the protection window — at no additional cost. Get this in writing before you book. "We'll take care of it" is not a guarantee.
4. Rain-Back Policy
Professional residual products need 30–60 minutes to bond to leaf surfaces. A company without a rain-back policy leaves you paying for a treatment that washed off before it cured. Ask specifically: "What do you do if it rains within an hour of my treatment?"
5. Clear Re-Entry Instructions
Any professional company should clearly communicate when it's safe for children and pets to re-enter the treated area. The standard is 30 minutes after application for Health Canada–approved residential formulas. If a company can't give you a clear answer on this, walk away.
6. Local Reviews Mentioning Actual Results
Look specifically for reviews that describe results over time — not just "friendly tech" or "on time." Reviews that say things like "we had a party two weeks later and nobody got bitten" tell you the product actually worked. Generic service reviews are useless for evaluating efficacy.
7. Transparent Per-Visit Pricing
Reputable companies price by treated area. Be cautious of companies that lock you into long multi-year contracts without clear cancellation terms, or that quote you a price without assessing your property. For current pricing in Ontario, see our 2026 mosquito control cost guide.
Fogging vs. Barrier Spray: What Most GTA Companies Actually Use
Fogging disperses a mist into open air to knock down adult mosquitoes immediately — results last hours to a few days at most. It looks dramatic but provides no lasting protection. Most reputable residential mosquito companies in the GTA use barrier spray, not fogging, precisely because it creates residual protection that lasts up to 30 days.
If a company offers "fogging services" and nothing else, they are selling you a temporary fix that needs to be repeated weekly to maintain any effect. That adds up fast and delivers far less value than a proper barrier spray program.
Mosquito and Tick Control: Why the Best Companies Offer Both
The barrier spray that eliminates mosquitoes also kills ticks at all life stages — including the hard-to-see nymphs responsible for most Lyme disease transmission in Ontario. Companies that provide both in a single visit save you money and ensure complete coverage of your property's vegetation surfaces. See our tick control service for details on what's included.
Why BuzzSkito
- Health Canada–registered formula, registration number available on request
- Free re-spray guarantee — if mosquitoes return within the protection window, we come back at no cost
- Rain-back guarantee — significant rain within one hour? We return and re-treat
- Safe for children and pets 30 minutes after application
- 126 five-star Google reviews across the GTA
- Serving 19 cities — Mississauga, Toronto, Brampton, Oakville, Burlington, Hamilton, Vaughan, and more