Some control success is achieved with hydramethylnon bait stations, but results may sometimes be inconsistent. The application of residual insecticides, where the ant trails occur, often does not provide effective control. Suspected structural void and sub-slab colonies can be treated with appropriately labeled insecticide dusts or microencapsulated insecticides. However, it is more labor intensive than baits. It may be possible to place baits containing honey, sugar, or very-ripe fruits on sticky rodent glue boards and effectively achieve control of the limited numbers of ants occurring during the winter months.
Nests located outdoors have a single entrance hole.
One can apply a labeled insecticide emulsion or dust directly into the hole. Some prefer to apply a shovelful of moist soil over the entrance hole after application to prevent escape. It is often best to employ the services of a licensed pest control operator, especially where nests are hard to find and effective control is needed quickly. Before using any insecticide, always read the label, follow directions and safety precautions. Disclaimer - This publication may contain pesticide recommendations that are subject to change at any time.