Boric acid is a widely used and effective solution for controlling cockroach infestations. Use a light, barely visible coating in areas where roaches are most likely to travel, such as baseboards, crevices, wall voids, and under sinks. Avoid placing boric acid on countertops or food preparation areas.For enhanced results, consider using boric acid in combination with bait formulations. This approach can help attract roaches to the treated areas.