Spiders

Except for poisonous spiders, such as the black widow and the brown recluse, spiders are not harmful to humans.

When it’s important to control spiders, chemical control is used, along with destruction of webs and eggs. Since they feed on insects, measures that control unwanted insects will also reduce spider populations.

In order to control spiders, there are several things that are important to know. Don’t expect perfection in spider control; they are biologically not very receptive to chemical agents and not very cooperative in picking up pesticides.

So just spraying alone is not a great defense against spiders. As you know, spiders are built high off the ground. They don’t drag their bellies across surfaces. An insecticide residue on the surface only touches their feet. (Yes, they have feet.) But there’s not a circulatory system that will take the insecticide to the organs within the body to cause a quick death. That kind of contact won’t cut it for good spider control.