Last Wednesday morning, I discovered what I thought was a mouse scurrying across my living room floor and into my kitchen. The next morning I called Ace Exterminating Co. to check out the problem. I had been hearing some strange noises in the house before, but I hadn't seen any pests in the house until then. Josh, our technician, showed up Thursday morning and performed a very thorough search of the house, inside and out, and discovered that what I'd seen was actually a Norway rat, smaller than most rats found in urban areas, and that they were using insulation in the back of the oven as a nesting spot. Since Norway rats generally get into houses via small holes in the foundation, he put bait blocks in the basement/crawlspace as well as in the attic, where I had heard occasional scurrying noises. He also returned the next morning to check on the bait blocks, and since some of them had been moved, we figured the rats were taking to it right away. He set some more bait stations and promised to come back in ten days or so to check on the status of the problem. So far, no more rats in the house, alive or dead!