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Household Hazards Line: 206-296-4692

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Make friends with your “good bugs”

Assassin bug
Bacillus thuringiensis (B.t.)
Bald-faced hornet
Beneficial nematode
Bumble bee
Centipede
Dragonfly, Damselfly
Green lacewing
Ground beetle
Honey bee
Hover fly/Syrphid fly
Lady beetle
Mason bee
Parasitic wasp
Predatory mite
Rove beetle
Soldier beetle
Spider
Tachinid fly
Yellow jacket
Spider , Order Aranaea
Counteracts these pest(s)
Harmful insects and other pests 
How to recognize
Spiders aren't insects at all. They can be identified by their eight legs and two-part body. Although there are hundreds of species of spider in Washington, they all share this trait. Spiders are far more beneficial than they are dangerous. Most spiders are shy and harmless to humans.
Benefits
Spiders are the most important predators on insects, killing more than all other predators combined. They feed on a broad variety of pest insects year-round.
How to attract

You probably already have an abundance of spiders. You can provide spider habitat by covering bare dirt with mulch, creating a "wild" area in your yard, planting dense shrubs and coniferous trees, and providing a water source such as a pond.

If you are concerned about spiders in your home, sealing off your living space from the crawlspace, garage, floor voids and unfrequented storage space will help. House spiders and outdoor spiders are not the same species.

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