Spent twenty years as National Accounts Director of Terminix International. Managed sales and administrative operations for hundreds of companies and branch operations of both franchise and company owned Terminix offices. A client once said to me that he didn't mind paying for pest control service if he had a problem. This created a as needed vs. scheduled service delivery for roaches, ants, silverfish, rats and mice. Strongly suggest customers manage their sanitation and storage practices to assist in a pest free environment. Savings with as needed is significant compared to scheduled service.