CimeXa Insecticide Dust’s engineered silica composition quickly kills bed bugs, ants, cockroaches, firebrats, fleas, mites, silverfish, spiders, stored product beetles and moths, ticks and drywood termites by destroying the pest’s waxy cuticle — resulting in rapid dehydration and death. It is also effective on pyrethroid-resistant pests, the company says. Featuring low toxicity and a broad label, CimeXa is odorless, non-staining and non-repellent, and lasts up to 10 years when undisturbed. It can be mixed with water and applied as a spray. CimeXa is packed in 1-quart bottles (holds 4 ounces net weight) and 5-gallon buckets, which hold 5 pounds.