We live in Houston, and as a result of Hurricane Ike, we now have a lot of marsh mosquitoes (our son is mildly allergic, with local but significant swelling).  But we haven't seen any bees or wasps since the storm.  As for fireants, our son's big allergy, the mounds were washed away by Ike, but they are everywhere again and huge.  We too can see them from the car as we drive. Our yard is ok (treated) but our walks around the neighborhood are just like yours Stacie -- we see the mounds in almost every yard.  Our son (now 3 years old) starts immunotherapy next Monday for fireants.  He is to take a claritin tab before each injection to keep the swelling/ adverse reaction risk down.  Fingers crossed. 
Our home was damaged in the hurricane, but it is habitable.  We have gutted rooms, with open space to the attic, and I worry about fireants or wasps (our son's lesser sting allergy) getting into the house.  We are living life carefully, with the gutted rooms closed off and sealed with plastic.  Again, fingers crossed nothing gets in. 
Thanks Stacie for sharing your son's experience with immunotherapy.  We are really looking foward to getting this process started and hope for equally good results!
Kim