In 1959, John and his brother Harry launched J&J Exterminating from their mother's outdoor "breeze house," relying on little more than a landline and a shared work ethic. What began as a modest local venture eventually expanded across Louisiana and East Texas, built on a philosophy that prioritized personal character over mere corporate growth. Company representatives noted that John viewed his work as a calling rather than a trade, frequently reminding staff to treat every client with the same respect afforded to their own grandparents.

His approach to business centered on the families behind the service calls, focusing on the domestic stability of the households his team protected. This culture of service and faith remains the cornerstone of the company’s operations today. Now under the stewardship of his grandson, Robert Lewis John III, the firm continues to operate as a family-owned entity. The values instilled by its founder persist through a multi-generational workforce that honors the standards set during the company's inception in Crowley.