I recently moved into a new house here in Fort Smith.  It was not disclosed to me that my entire back yard gets OVER WAIST DEEP in water when it rains!  Luckily this house is a crawlspace and it's built high enough of the ground that the water doesn't actually come inside the "main" part of the house.  BUT, there is a lower level.  The lower level floor is at ground level.  So, as you can imagine, the water DOES come inside that part.  It seeps through the brick and slowly fills up with water.  That particular room has carpet, so it sucks the water up like a sponge.  As much as I have sucked the water up with a carpet shampooer,  I can't get all the water out.  I eventually just had to take all the carpet and pad out.  While i was watching my lower room fill up with water.  I knew that I wouldn't be going in that room until the water receded, which was about 2 days.  The reason I tell you that, is to tell you this.  Ants live in our yards, underground.  When it rains, it floods their home.  just like it did mine.  And, just like me, they had to leave the area that is flooding and move somewhere else.  And, usually that somewhere else is your home.  I'm sure you noticed by now that when it rains, all the bugs (especially ants) start moving into your home.  Ants especially will go to extremes to get out of the water.  When my yard was under water, they moved their entire colony into my mail box by the road.  I opened it up and there were the ants, their eggs, and food that they have brought with them.  They did what they had to do to keep their colony from drowning.  Now you know why you get bombarded by ants/bugs every single time it sprinkles.