What is the best treatment for ants found in a wall void?

The best treatment for ants found in a wall void is dust. Dust formulations are highly effective in these situations because they can be easily applied into wall voids and other hard-to-reach areas where ants may be nesting or moving. The fine particles of dust cling to the ants as they move through the treated area, allowing for better contact with the active ingredients. This method also minimizes the risk of exposure to non-target organisms, as the dust can remain in the void without dispersing into the surrounding environment.

In contrast, liquid and granular baits may not reach the nesting sites effectively within walls. Sprays can kill ants on contact, but they may not provide lasting control since the active ingredient can quickly dissipate, and the ants in the wall void may not be exposed. Dust is specifically designed to settle in cracks and crevices, making it the most efficient choice for targeting ants in such inaccessible areas.