I've been using fly-predators for many years, and Spalding Labs has become my go-to source. I can personalize the delivery schedule, the prices are great, and the predators have kept the fly population around my barn to a manageable level. If I ever have a problem or question, it is answered immediately and professionally. I love doing business with Spalding Labs.
Tip for consumers: sign up early to get special double-shipments during peak fly season.