Structural integrity is key to preventing wildlife from entering a building. Any damage and decay that allow openings into a structure need to be remedied. Make sure attic entrances are secure and soffits are structurally sound.
Some houses have open vents for the attic or roof, and bats will enter through these openings and congregate in attics. Use mesh screen to prevent intrusion. Raccoons are opportunistic and, given an avenue for entry, will breed in attics.
Once wildlife gains access to a structure, trapping can be a difficult process. Train your personnel properly, and use the same technicians for all wildlife jobs.
Also, don’t forget about disinfection and odor control. Using disinfectants before and after fecal and other waste removal will help prevent the spread and direct contact of microorganisms such as bacteria and deadly viruses, including hantavirus. Wildlife odors that inevitably accompany animal invasions can be effectively handled between clean-up and the use of a bio-sanitation foam.