How Effective Is Spraying for Spiders

Short of a direct spray into the spider’s face with a contact pesticide, spraying is not very effective for getting rid of spiders. There may, however, be limited effectiveness to using a residual insecticide in the cracks and crevices that spiders pass through.

How long does spraying for spiders last?

Professionally performed general pest control treatment—for spiders, moths, roaches, silverfish, pill bugs (roly-polies), etc. —lasts a few months and needs to be done quarterly. A serious infestation of ants requiring monthly visits are necessary for three to six months depending on the scope of the treatment.

Is it cruel to spray spiders?

“If you can’t spray a spider, you can’t kill it. When it comes to funnel webs, wolf spiders, or mouse spiders – ground spiders – you won’t ever completely get rid of them with just spraying because they roam around hunting.” The reality is, killing every bug in your garden with insecticides can destroy the ecosystem.