sweet itch

My neighbors horse has sweet itch, how do you treat it. She isnt doing much for it and I volunteered to help her.Its like black rough spots on his neck,shoulders and his belly a 2 inch strip all the way down almost to the shealth.The horse is itching on trees.We did bathe him in a anti fungal shampoo, that I went and bought.Has anyone experienced this with their horse,what do we do to treat it. Thanks

Sweet itch is caused by bugs.
Easiest solution....bug spray and SWAT

Sonny gets it ALL the time. Make sure the horse has bug spray on. On the spots that she rubbed off, put some SWAT on (try not to get any of the spray there...don't want chemical burns) and make sure she always has SWAT on there until the hair grows back.

Ok, thanks I 'll tell her to pick up some swat.