Gary from Fort Pierce, Fl. writes
Tried Demon but did not have any lasting residual effect to prevent spiders from rebuilding. Product should last at least a month to make it worth the effort.
The residual of Onslaught FastCap should last at least 30 days outside and 90 days inside and you would reapply that often. Please also take a moment to read over our article on How to Get Rid of Spiders for helpful non-chemical tips.
Answer last updated on: 01/11/2014
