Joyce – I noticed that you never tried flax seed. I tried the same approaches you have with my gelding and none of them were successful (He even developed an allergy to some of the fly sprays). However, after I started feeding a stabilized ground flax seed product (in my case, Glänzen 3, HorseTech.com) the itch went away. I am sure there are other stabilized flax seed products you also can use. You can also feed flax seed, but it must be ground, otherwise it will pass through the GI system whole and just end up in the manure. If you grind it yourself, it must be freshly ground, because the omega-3s will quickly break down when exposed to air.