Home Maintenance for St. Louis Area Homeowners

Spring 2026: The Most Important Maintenance Window of the Year

March through May represents the highest-stakes maintenance period for Missouri homeowners. Termite swarm season begins. Carpenter ants establish new satellite colonies. Rodents that entered homes in fall are now active. Moisture from snowmelt creates conditions for wood rot and mold that become expensive repairs by summer.

The most impactful preventive steps cost very little compared to the remediation they prevent. A $200 pest inspection that catches a termite colony early saves thousands in structural repair.

Spring Home Maintenance Checklist — Missouri Edition

• Schedule annual termite inspection. The entire St. Louis metro sits in moderate-to-heavy termite pressure zone. Spring is swarm season — inspections booked before April avoid the rush.
• Clear debris from foundation perimeter. Wood chips, leaf litter, and firewood stored against the foundation are primary harborage for carpenter ants, termites, and rodents. Move all organic material at least 18 inches from the structure.
• Inspect crawl space for moisture. Standing water or excessive moisture accelerates wood decay and creates ideal conditions for subterranean termite colonization. A vapor barrier and adequate ventilation are the two most cost-effective preventive investments.
• Check door and window seals. Winter expansion and contraction cycles loosen weatherstripping and caulk around frames. Gaps as small as 1/4 inch allow mice entry. Re-seal before pest season peaks.
• Treat exterior perimeter. A licensed pest control operator applying a perimeter treatment in April dramatically reduces indoor activity through summer.
• Inspect attic vents and soffits. Damaged soffit panels and unscreened attic vents are primary entry points for bats, birds, squirrels, and rats. Inspect and repair before nesting season.
• Look for mud tubes on foundation walls. Subterranean termite mud tubes — pencil-width earthen tunnels on foundation walls — are the earliest visible sign of an active termite infestation.

Rodent Exclusion: The Most Cost-Effective Home Improvement You Are Not Doing

Missouri homeowners spend more on rodent remediation than any other pest category except termites. The majority of these costs are preventable through exclusion: systematically sealing the entry points mice and rats use to access the structure. A house mouse can enter through a gap the diameter of a pencil.

For Franklin County and Gasconade County homeowners — where agricultural adjacency significantly elevates rodent pressure — D&D Pest Control offers integrated rodent management including exclusion services.