
Membership in their state pest control association and/or National Pest Management Association suggest the company is an established firm with access to technical and training information needed to do the job correctly.
Some companies also will repair damage occurring subsequent to their treatment, although dating onset of damage is a hard thing to determine. In some cases, no warranty will be offered if wells, cisterns, sub slab heating ducts, drainage systems, or inaccessible crawl spaces make it impossible to treat in accordance with industry standards.