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A rat nest often looks like a messy, loosely formed pile hidden in a quiet spot. It may appear as a ball-shaped cluster or just a scattered heap made from shredded paper, fabric, insulation, leaves, twigs, and other soft materials. Rats gather whatever they can find nearby to build their nests, often tucking them away in walls, attics, or behind appliances for warmth and safety.

Yes, crawl spaces can attract bugs, especially since moisture tends to build up in the space, and moisture attracts pests. A good way to prevent pest infestation in your crawl space is to install a vapor barrier—called crawl space encapsulation—on the interior to seal the space, along with a French drain or some other kind of foundation drainage system outside to keep runoff out of your crawl space. You can also seal foundation cracks and repair damages to cut off access to pests.

Neither the black widow nor the brown recluse are deadly spiders, and North America has no deadly species. However, other places in the world do, including Australia, which is home to the funnel web spider, considered the world’s deadliest spider. However, Australia has not reported deaths from a funnel web spider bite over the past few decades after developing an antivenom.

A wasp is less likely to sting you if you remain still and calm when it lands on your or flies around you. Most wasps only sting when they feel threatened or disturbed, which is how they may interpret rapid movement or swatting. This is why it’s best to suppress movement and wait for the wasp to fly away.