• King Wildlife Services

King & Snohomish County Bat Removal/Exclusion


Bats are highly beneficial to our environment and ecosystem. They consume mass amounts of insects on a daily basis, are capable of pollinating flowers, and their droppings (“guano”) is a prized fertilizer. However, they can also carry zoonotic diseases that are harmful to humans and pets. The bottom line is, you do not want bats in your attic or any other part of your home! They’re only really beneficial outside!

If Bats take up residence in your attic, their droppings will usually form in piles and can cause issues by accumulating on the insulation. Aside from structural damage, this allows for easier transmission of disease, odor, etc. Bats hang from the ceiling of attics or other spaces and their feces falls straight down, however, people can be living right below this without even knowing!

Aside from visually seeing Bats flying around, one of the easiest ways to detect you have Bats in your attic is “scratching” noises in the evening/night. Many customers report hearing these noises far before ever actually seeing a Bat. If they ever see a Bat at all. A professional wildlife control operator can do a thorough inspection of the attic and formulate a proper diagnosis. From there a solution for the issue can be devised. Bats can have the need to feed on insects outside the attic almost daily so timing and proper exclusion measures are critical. At the right time of year and with the most advanced methods, Bats can be properly evicted within just a few days.

The most economical, efficient, and humane method practiced for safely evicting Bats is through the means of applying silicone caulking to any opening ⅜”X1” and then attaching bat exclusion devices to the premises. This unique procedure properly seals any openings that Bats have been using, with the exception of a few spots which become precisely covered with the Bat exclusion devices that are proprietary to the wildlife control industry. These devices, sometimes referred to as “Bat cones”, simply let the Bats out but do not let them back in. This is why it’s important to thoroughly seal all other openings that are ⅜”X1” or larger in size.

Once no more noises are reported by the homeowner/tenant, the Bat exclusion devices can be removed and those openings are now able to be sealed up. This step completes the job, as all bats should be evicted and now all access points are sealed. The only precautionary measure that can be done at this time is to erect “Bat houses” on the property and have the Bats take up residence in these instead of in their previous location (attic). This is more of a long term strategy and is the best option for maintaining a healthy, sustainable Bat population in the Seattle area while also keeping them out of your immediate location/attic.



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