Raid® Ant Killer Powder effectively controls crawling insects like ants, woodlice, and cockroaches. It works by dusting along ant runs, cracks, crevices, and even into nests. The powder is picked up by the insect, leading to death within 30 minutes of contact, with continuous protection against re-infestation for up to 12 weeks. This product is suitable for use in homes, cellars, and dry outdoor areas adjacent to buildings, such as paths and patios. Apply along trails, cracks, and crevices on doorsteps, window frames, and air bricks to prevent insects from entering. For maximum effect, leave the product undisturbed and dry. Re-apply if necessary after 12 weeks. Raid has been a trusted brand for pest control since 1956, offering a wide range of solutions from sprays to baits and barriers. SC Johnson - A Family Company since 1886.