Living next to open space and agriculture means South Valley homes get visitors. Ants in the kitchen. Spiders in the garage. Mice in the attic when the weather cools down. Gophers turning your yard into a minefield. And the occasional scorpion if you back up to the hills.
Some of this you can handle yourself. Some of it needs a professional.
What Shows Up in South Valley Homes
Ants (Argentine ants): The number one pest complaint in Morgan Hill and Gilroy. They show up in kitchens and bathrooms, especially in spring and fall. They're looking for water and sugar. Trails of hundreds of ants appearing overnight is classic Argentine ant behavior.
Spiders (black widows and others): Black widows are common in garages, sheds, and woodpiles throughout the South Valley. They're not aggressive, but their bite is medically significant. If you're reaching into dark corners, wear gloves.
Rodents (mice and rats): Roof rats and house mice are active in fall and winter when they move indoors for warmth. Attic noises, droppings in the garage, and chewed wires are the telltale signs.
Gophers: A South Valley specialty. These things destroy lawns, gardens, and irrigation lines. If you see fresh mounds of dirt in your yard, you have gophers.
Termites: Both drywood and subterranean termites are present in this area. Older homes (pre-1990s) are especially susceptible. A termite inspection costs $75 to $150 and is required for most home sales.
Scorpions: More common in homes that border open hillside or rural areas (east Morgan Hill, San Martin, outskirts of Gilroy). Arizona bark scorpions are not here, but the less dangerous California species can still deliver a painful sting.
DIY vs. Professional
Handle it yourself:
Ant trails in the kitchen: clean up the trail, seal entry points with caulk, use bait stations (Terro liquid bait works). Give it 2 to 3 days. If they keep coming, call a pro.
A single mouse: snap traps (the old-fashioned kind) baited with peanut butter. Place them along walls where you've seen droppings. If you're catching multiple mice over several days, you have a population, not a visitor. Call a pro.
Garden spiders: leave them alone. They're eating the bugs you don't want.
Call a professional:
Multiple rodents, evidence of nesting, or droppings throughout the house.
Termite activity (mud tubes on the foundation, hollow-sounding wood, discarded wings near windows).
Recurring ant problems that don't respond to bait stations.
Black widow infestations (more than the occasional one in the garage).
Gopher populations (they breed fast and traps require specific placement).
Any wildlife (raccoons, skunks, opossums) in your attic or crawl space. These need humane removal by a licensed operator.
What Pest Control Costs
One-time treatment (ants, spiders, general pests): $150 to $300
Quarterly service plan (most common): $100 to $175 per visit, billed quarterly. Covers ants, spiders, roaches, and general pests.
Rodent exclusion (sealing entry points + trapping): $300 to $800 depending on house size and severity
Termite treatment (whole house fumigation): $1,500 to $3,000+ depending on square footage
Termite treatment (localized/spot): $500 to $1,000
Gopher treatment: $100 to $300 per visit, or $400 to $800 for a season contract
Wildlife removal: $200 to $500 per animal
Choosing a Pest Control Company
License: California requires pest control operators to have a Structural Pest Control Board license. Verify at pestboard.ca.gov.
Ask what chemicals they use. If you have kids, pets, or a vegetable garden, ask specifically about the products being applied and where. A good company will explain what they're using and offer lower-toxicity alternatives where appropriate.
Get the service agreement in writing. What's covered, what's not, how often they come, and what happens if the problem comes back between visits.
Avoid door-to-door pest control salespeople. This is a common tactic in Morgan Hill and Gilroy neighborhoods, especially in spring. They'll show you a \"termite\" they \"found near your house\" and try to sign you up for an expensive treatment plan on the spot. Get a second opinion from a company you choose, not one that chose you.
Got a pest control company in the South Valley you trust? Email [email protected].
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