On July 25, 2024 my wife and I noticed that one of our two border collies, Lulu, was scratching, biting, and licking a small lump that had formed on the right side of her back.  The next day my wife took Lulu to our veterinarian to have it check out.  After initially looking at the affected area in the examination room, the vet and her assistant took Lulu to another room to shave the hair away from the area so that they could get a closer look at what was causing the lump.  The vet and her assistants were shocked when a small worm-like creature suddenly popped out the the lump and fell onto the exam table.  Upon returning to the room where my wife was waiting, the vet said that Lulu had a botfly infection.

The vet prescribed some meds and Lulu appears to be healing and so far no other lumps have appeared on her body.  Our concern now is that there is a good chance that Lulu could have contracted this botfly by ingesting botfly larvae infected vegetation, specifically grasses, that are growing in our own yard.  While researching the types and habits of botflies, I read that botflies tend to lay eggs on vegetation around rabbit and other kinds of rodent dens, and it just so happens that the neighborhood where we live has many rabbits.  Not a day goes by that we do not see three or four rabbits near our yard.  My question is this: are there any substances for spraying on grasses and other vegetation to that will kill botfly larvae but that is harmless to mammals and birds?