Thank you! Message Sent!
ERROR: Message Not Sent!
Bug Blocker

How can we help?

You've got questions, we've got answers. We will email or call you back shortly.

*Your Name

*Your Email

Phone (Optional)

*Your Question

Please answer the following question:

*What is 3 + 9


"Let the fresh air in and keep the pests out!"

Bird Barrier Doors

Quick Facts:


The most common birds infesting buildings are sparrows, pigeons and starlings.

Government recommended screen mesh sizes are:

  • 3/4 inch for sparrows
  • 1 1/8 inch for starlings
  • 2 1/2 inch for pigeons

Bug Blocker® Overhead Loading Dock Screen Doors and Air Inlet Screen Panels. Acceptable for use as a bird barrier screen is our Stainless Steel 12 x 12 mesh with opening size 0.0600 in.sq. , 30 x 30 mesh with opening size 0.0223 in.sq., and Stainless Steel expanded metal screen panel ¾ “ x 1 ½” opening size (add 30 x 30 or 12 x 12 mesh for sparrow control).

You never want to kill or harm birds. A green, humane solution is to keep them out of your building in the first place. Keep the Birds Out with a Bug Blocker bird barrier method. With no permit needed, our overhead screen doors & screen door inserts give you a green, nonchemical and earth-friendly option for bird control.

From the University of MN extension: The first step in your bird control program should be the identification of the pest bird, The Migratory Bird Treaty and Endangered Species Acts prohibit trapping or killing of most birds, eggs or nests without a permit. House sparrows, starlings, and pigeons are not protected under these Acts, but may be covered under local ordinances, so be sure to consult with local wildlife authorities. Habitat modification and exclusion from structures are generally the most effective ways of controlling nuisance bird populations. USDA, FDA & other government agencies require birds stay out of food and packaging facilities.

A.I.B. requirement:

2.9 Pest Prevention. The materials, structure and maintenance of the building and equipment support the Integrated Pest Management Program.

Critical Requirements: The building has barriers in place to protect against Birds, rodents and insects.

Keeping Birds Out of your Building

Are inspectors telling you to keep the birds out?


A nuisance in manufacturing and food processing plants. Janitorial problems occur from the droppings and feathers as well as hazardous, unsanitary, and odoriferous situations inside and outside of buildings and sidewalks under roosting areas. Drainage pipes clogged with nests can backup and cause extensive water damage and fires have been attributed to electrical shorts caused by machinery housing nests. Feces buildup can lead to structural damage from the uric acid in droppings, plus the bacteria, fungal agents and parasites in the feces also pose a health risk. In grain storage facilities, fecal contamination probably results in as much monetary loss as does the actual consumption of grain. The bulky, flammable nests of sparrows are a potential fire hazard. Lastly, an unsatisfactory inspection is not what you want on your watch.


After you have successfully removed the birds from your facility keep them out by securing all access points including your loading dock doors. We suggest Stainless Steel Bug Blocker® Screen Doors as an effective bird barrier. Rasco Industries can manufacture custom size screens for unique openings around your building, air inlet door panels, louvers, windows and doors. Habitat modification and barriers to the facility is generally the most effective ways of controlling nuisance bird populations.

  1. Eliminate potential food and water sources, if possible.
  2. Keep your facility clean. If you are attempting to clean up an existing bird problem, be sure to clean up all dirt, nests, and bird droppings prior to installing any bird control deterrents; this will prevent pest birds from reusing nest material or following their own scent trails back to old roosting sites. Since bird droppings can harbor parasites, bacteria, and disease-causing organisms, a thorough cleaning will also help protect those who will be installing bird control devices or deterrents. Be sure to wear protective clothing (face mask, gloves, coveralls) if cleaning up a large accumulation of wastes, and be sure to launder protective clothing separately.
  3. Deter reentrance of birds. Secure all access points including loading dock doors, windows, air inlets, louvers, crevices and roof openings. This is a green and humane way to provide bird control. Keep them out of your facility from the start with an effective bird barrier system.

First, Contact your local government extension office or pest control technician for bird problems specific to your area. Next, you can contact us to find out how we can help with your loading dock or service door solutions. Want more information? Call us at 800-537-3802 today!

Survey Forms