Top Soil Natural Premium 40lb. Plain old dirt. If you have low spots around your house, fill them in with dirt. Less water will get stuck against your foundation, and basement or crawlspace dampness issues are likely to improve. Try it before spending $3,000 – $30,000 on basement waterproofing. Don’t buy this here for crying out loud, the shipping is twice the cost of the bag. It’s just here for illustration purposes.