Added a deer noise maker which barely made dogs look. Haven't seen a deer to say if it's working or not. Also wanted a noise maker for people to hear me in parking lots. Not impressed I went with this toy here. A wolo animal noise maker. https://youtube.com/shorts/yMow2QxeZxk Mounted behind front bumper & wired up quickly as I had left a spare wire between the firewall for future mods. The controller is huge but haven't bumped it yet under the steering wheel. Also upgraded the factory horns to Hella brand & wired up a motorcycle Stebel brand horn.
I remember when I was living in South Carolina in the late 80's deer strikes were a major problem, especially to state owned vehicles. The folks in Columbia decided to put deer whistles on half of them....and (you guessed it!) those with the whistles installed had a higher incidence of deer-strikes. But...hey. Hope it works out for you!