It is because these are breaking down animal dander, dust mite allergens found in the furniture or carpets and cockroach allergens. So, if you have two or more cats or other animals in your home, sprays maybe will not give you effectively results. But, tannic acids, may make stain on your light furniture or light carpets, so it is not recommendation to use it on light surfaces. Thanks to these antibodies, your immune system becomes much sensitized so it starts with neutralizing of substances and help you to recover from the illness after few days. During the time, your immune system is much ready for producing new antibodies which will react on the next entering causers of allergy. It is essential for patient to have igE antibodies to the allergens, for using immunotherapy. It also confirmed by John Yunginger, M.D., who is a member of FDA's Allergenic Product Advisory Committee. IgE is shortcuts of the immunoglobulin E. This is an antibody which immune system produces with the first time of exposing to the allergens. The most famous reasons that cause dog allergy are dog's dander, urine or saliva. Still, the majority people are thinking that fur is the main reason of dog allergy. It is not truth. Fur is not allergens as itself, but while your dog is grooming, collected dander and saliva that spread in the air make ideal conditions for allergy. This includes next: ammonia, acetaldehyde, carpets, paints, formaldehyde, adhesives, etc. For keeping your health and air indoor healthy, free from allergens, you may use product known as allergy relief air purifier in door. Here you may find some of the top picks for allergy relief air purifier products. If you find that food contain ingredients on which you are allergic, you shouldn't eat it. Method For Avoiding Allergic Foods If you are allergic on certain food, it doesn't mean that you should stop with eating food on which you are not allergic. Also, if you think that you are allergic on some food, it doesn't mean that you are, until you do blood analyzes and determine on which food you are allergic.