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Living along the coast has its perks ...but pests aren’t one of them. Understanding when different insects and rodents are most active can help homeowners stay one step ahead. This Coastal South Carolina pest calendar breaks down what to expect month by month so you can protect your home year-round. From termites and mosquitoes to rodents and roaches, here’s what typically shows up, and when, in our unique Lowcountry climate.
January
Cold snaps push pests indoors.
Common pests: Rodents, cockroaches, spiders
What to watch for: Rats and mice seeking warmth, German roaches hiding in kitchens and bathrooms.
Prevention tip: Seal cracks, inspect attic spaces, and reduce clutter.
February
Early warm days can wake overwintering insects.
Common pests: Ants, roaches
What to watch for: Ant scouts entering homes searching for food.
Prevention tip: Clean up crumbs and seal entry points.
March
Spring pest activity begins to ramp up.
Common pests: Termites, ants, mosquitoes
What to watch for: Termite swarmers - a major red flag.
Prevention tip: Schedule a professional termite inspection.
April
Warmth and moisture fuel pest reproduction.
Common pests: Mosquitoes, ants, termites
What to watch for: Standing water and increased mosquito activity.
Prevention tip: Remove standing water and maintain gutters.
May
Peak spring pest season.
Common pests: Mosquitoes, spiders, ants
What to watch for: Mosquito breeding around yards and patios.
Prevention tip: Start routine mosquito control treatments.
June
Summer pests are fully active.
Common pests: Mosquitoes, fleas, ticks
What to watch for: Increased biting insects affecting pets and family.
Prevention tip: Treat lawns and shaded areas regularly.
July
Heat drives pests to water and shade.
Common pests: Roaches, mosquitoes, ants
What to watch for: Palmetto bugs entering homes during storms.
Prevention tip: Reduce moisture and keep doors sealed.
August
Late-summer infestations peak.
Common pests: Mosquitoes, flies, roaches
What to watch for: High mosquito populations after heavy rain.
Prevention tip: Consistent outdoor pest control is key.
September
Pests prepare for cooler weather.
Common pests: Rodents, spiders, ants
What to watch for: Rodents scouting entry points.
Prevention tip: Inspect foundations and seal gaps.
October
Fall invaders appear.
Common pests: Rodents, spiders, stink bugs
What to watch for: Increased indoor pest sightings.
Prevention tip: Exterior perimeter treatments help prevent entry.
November
Cooler temperatures push pests indoors.
Common pests: Rodents, cockroaches
What to watch for: Activity in garages and attics.
Prevention tip: Store food securely and reduce hiding spots.
December
Quiet outdoors, busy indoors.
Common pests: Rodents, roaches
What to watch for: Pests nesting in warm areas.
Prevention tip: Maintain year-round pest control services.
Why a Year-Round Pest Plan Matters
Coastal South Carolina’s mild winters and humid summers mean pests never truly go away, they just change. Following a seasonal pest strategy helps prevent infestations before they start and keeps your home protected no matter the month.
Protect Your Home Year-Round with Hilton Head Exterminators
If you want peace of mind all year long, trust the local experts who understand the Lowcountry. Hilton Head Exterminators provides customized, year-round pest control solutions designed specifically for coastal South Carolina homes. Contact Hilton Head Exterminators today to schedule an inspection and keep your home pest-free, month after month.
