I hate those Asian Beetles! A friend of ours is the County Extension Agent and he recommended spraying your foundation with a product called Tempo. You can find it at farm supply stores or buy it online. It costs about $35 or so, but that bottle will last you about 10 years. Farmers use it to control flies, etc in their barns. It works great. You just need some kind of a sprayer, you mix it with water and spray. He said that the bottle recommends using 6 oz with 1 gallon of water but use 8 oz instead (the bottle has a self-measuring dispenser). It will last for weeks, unless it rains and then you have to re-apply.