Gallon, Ready To Use, Stink Bug Killer.03% Deltamethrin, Non-Staining, Odorless, Use Indoors & Outdoors, Apply This Product To Foundations, Eaves, Window Sill, Thresholds & Siding, Begins Working Once Dry, Residual Kill & Not An Instant Knockdown Product, Not Intended To Spray The Insect Directly, Spray The Formula In Areas Where You Are Seeing Stink Bug Activity & After The Product Has Ample Time To Dry, There Will Be A Residual Left Behind Which Will Kill Any Stink Bug Or Other Insects That Crawl Across This Dried Area.