OP here again with another update.

We went through January, February, and much of March seeing very little activity, just a couple of ants in all, but now that it's getting warmer we've started seeing more. In walking around our neighborhood I've seen other houses have the sand traps filled in with concrete so I've talked to our builder who has said they'll come out and fill in both sand traps with concrete which should hopefully stop our influx of bugs.

So a note to those with either an inside bug problem or having a house built -- have your sand traps filled in under all bath tubs! It'll save you plenty of grief

Sam Alex