A simple homeowner inspection for standing water, dense resting habitat and the backyard zones that commonly create mosquito pressure.
Start high
Look at gutters and the path water takes from downspouts.
Walk the perimeter
Check fence lines, dense shrubs, ivy, bamboo, wooded edges and shaded foundation beds.
Look for containers
Inspect toys, buckets, saucers, planters, wheelbarrows, covers, tarps and anything else that can catch rain.
Check drains and low spots
Corrugated extensions and poorly draining areas deserve special attention.
Finish where people gather
Pools, patios, playsets, decks and seating areas should be checked for nearby shade, moisture and containers.
Quick answer
When should I repeat the check?
After storms, major irrigation changes, yard projects or whenever mosquito pressure changes noticeably. A fast repeatable inspection is more useful than a one-time deep clean.