I am not sure if in your case if it is possible, but have you considered getting allergy shots? I used to be allergic to dogs and went through only a small amount of allergy shots as a child and it significantly improved things to the point of where I plan on getting a dog in the future. I am allergic to grass and since going this site I have been giving my pigs much more hay lately and obviously handling it much more and my allergies have gotten much worse. I am considering talking to my doctor to possibly see a specialist to get retested for allergies and get allergy shots so the symptoms hopefully go away or aren't so bad.