First and foremost contractor should be certified. And the contractor needs to be able to take the time to come to your job site and talk with you to learn your needs for the project. After visiting the site, the contractor should fax or deliver an estimate of expenses including materials and labor. The contractor has proper pesticide licenses. You should ask to see pictures of landscapes, water features and hardscapes that were designed and installed both by in-house staff members or by a close work associate. Find this informative? For more details visit at https://www.dsldland.com/