Astro Aerosol is a long lasting residual insecticide specifically formulated to control crawling insects in domestic, commercial and industrial applications. Spray directly onto insects for fast kill or spray onto surfaces for up to two months barrier protection from crawling insects. Spray walls, windows, and ceilings paying particular attention to areas where insects congregate.
One can will treat 25- 35 m2 (depending on the porosity of the sprayed surface).
If you want spiders to die faster than grocery store sprays this is the product for you!
Photos shown holding the can for size reference.