doctor geffen, boulevard animal hospital, lot of questions here. pollen, when it comes to the ground and your dog walks along they pick up pollen on their feet, ears and then they have a problem. >> yes, there is a lot of evident. we used to think it was inhaled but is there evidence certainly that just getting on the skin, penetrating through the skin can cause irritation. so a lot of times, frequent bathing can help, in addition to the other things we talk about with the antihistamines, predisone, and other, internal medicines that we use. it can help because of that. >> can you over bat he your pet use too many shampoos and create a problem from that. >> i think you can over bath if you use the wrong shampoo. there are shampoos that are balanced and can be used every day. >> what kind of shampoos can you use every day. >> well, basically grooming shampoos. each one is individual. you would have to ask your veterinarian or check with the pet supply store thaw buy it from. label will tell you how safe it is frequently to use it. >> okay. do you ne