I'm afraid you've haven't rec'd any replies shows the sad state of lawn spraying in Jax. I've been a mowing contractor in Mandarin and St. Johns Cty. for 25 years and I always hesitate to recommend any one Co. to my customers. It always backfires on me.
You COULD try Julington Creek Pest Control. Invite him out and have a long chat with him . Tell him what you want , and see if he can help you. Good luck. Walt