Top 5 Pest Threats in Eastern Ontario for 2026
Expert analysis of the pest trends shaping the 2026 season, with prevention strategies for homeowners.
By PrecisionPro Pest Solutions · Published March 2026 · 6 min read
As we head into the 2026 pest season, Eastern Ontario homeowners face a mix of familiar challenges and emerging threats. Climate patterns, urban expansion, and increased travel all contribute to evolving pest pressures. Here are the top 5 pest threats to watch for this year, based on our team's field experience and industry forecasts.
Mice & Rats
Rodent populations continue to grow in urban and suburban Ottawa. Warmer-than-average fall temperatures in 2025 extended the breeding season, resulting in larger populations heading into winter 2026. The Ottawa area has seen a 15-20% increase in rodent service calls compared to previous years.
Prevention Tips
Seal all exterior gaps larger than 6mm, store food in sealed containers, eliminate outdoor harborage like woodpiles and overgrown vegetation near foundations.
Bed Bugs
Bed bug infestations remain a persistent challenge across Eastern Ontario, driven by increased travel and the pests' resistance to many over-the-counter treatments. Multi-unit housing and hotels continue to be hotspots, with infestations spreading to single-family homes through second-hand furniture and luggage.
Prevention Tips
Inspect second-hand furniture, use mattress encasements, inspect hotel rooms when traveling, and wash/dry clothing on high heat after trips.
Carpenter Ants
Wetter spring conditions forecast for 2026 create ideal conditions for carpenter ants, which are attracted to moisture-damaged wood. These destructive pests can cause significant structural damage if left unchecked, tunneling through load-bearing timbers and framing.
Prevention Tips
Address moisture issues promptly, replace water-damaged wood, keep tree branches trimmed away from your home, and ensure proper grading and drainage around foundations.
Wasps & Hornets
Summer 2026 is expected to bring typical wasp and hornet activity. These aggressive stinging insects build nests in eaves, wall voids, and underground. A single nest can house thousands of individuals by late summer, making professional removal essential for safety.
Prevention Tips
Inspect eaves and overhangs regularly in spring, seal exterior wall gaps, keep outdoor food and garbage covered, and contact a professional immediately if you find an active nest.
Ticks
Climate change is expanding tick habitats northward into Eastern Ontario. Black-legged (deer) ticks, which can carry Lyme disease, are now being found in areas where they were previously uncommon. The public health implications make tick awareness increasingly important for Ontario residents.
Prevention Tips
Keep grass mowed short, wear protective clothing outdoors, use approved tick repellents, check yourself and pets after outdoor activities, and consider professional yard treatments.
Stay Ahead of Pest Threats
Don't wait for pests to become a problem. Schedule a preventive inspection today.