Lady Beetle Control: Why Residual Insecticides Work Despite Exterminator Claims

An exterminator claimed lady beetles can't be controlled with residual chemicals because they don't "groom" their legs. This is incorrect—most insecticides absorb efficiently through insect feet without grooming. Porous surfaces like brick hold residue less effectively than sealed surfaces, and product persistence varies. Read labels for reapplication intervals.

For building perimeter control, spray around door openings with appropriate products, understanding that surface type and weather affect longevity.