Right now I'm using EDs Fly Meat mix with success. In the past I've used Carolina 4-24 and homemade concoctions. The EDs mix seems to be one of the most gentle with my allergies, with Carolina in second. The homemade mix was terrible for smell and making me have a constant cough for the rest of the day after feeding.
I also use ed's fly media and have found it quite easy and reliable practically ZERO smell and flies in abundance. I am however trying to work out my own concoction and was wondering if anyone had any tips.