 But according to the Mayo Clinic, there are a few strategies for reducing exposure to allergy triggers that really can work. Now, the key here is to reduce your exposure to the things that trigger your allergy signs and symptoms. You want to stay indoors on days that are dry and windy. The best time to go outside really is after a good rain because it kind of clears all the pollen from the air and washes it off of the surfaces of everything.