La Mesa is full of the kind of housing roof rats love. The older homes around La Mesa Village and the hillsides below Mount Helix come with mature trees, established plantings, and construction gaps that have had decades to open up. Add the warm East County climate and you get roof rats that stay active and breeding for most of the year.
The classic La Mesa pattern is a roof rat colony that climbs a fruit tree or ivy-covered fence, crosses onto the roof, and drops into the attic through a gap at the eaves or a vent. Homeowners usually notice the scratching overhead in the evening before they see anything, followed by droppings in the attic or garage. House mice are the other regular caller, working their way into kitchens and garages through openings as small as a dime.
We treat La Mesa homes by finding every entry point first, then sealing the roofline, vents, pipe gaps, and garage before setting traps for the rodents already inside. On an older home the sealing step is what makes the difference, because there are almost always several gaps rather than one, and closing all of them is what keeps the rats from coming back.
Mount Helix and the canyons around La Mesa also keep a steady supply of rodents moving through the area, which is why sealing beats one-time trapping here. Call 619-353-8532 to connect with a rodent exterminator who works La Mesa and the rest of East County.