If you're concerned about the safety of the products, contact your local county extension office, which can often provide information on what products should be used and under what conditions. The application of certain chemicals may depend on the weather. For instance, rain may be ideal for some products, while others require a dry environment. Liquid sprays cannot be applied on windy days since there is a danger they will drift. To be safe, keep yourself, your family and pets off the lawn during an application and until the turf is dry.
Some companies automatically renew the service year after year on the basis of a phone call.
If so, ask the company to confirm the agreement to renew the service in writing. Also, find out if the company has increased its service charges from the previous year.