The problem in the home in Salisbury, MD is that the sump pump isn't enough to handle every job. Most of the time you will need to install a good liner and drainage pipe system to complete the solution. It's a little like thinking you can travel cross country with a car that only has an engine, no seats, or tires, or doors, etc. Each wet crawlspace needs a whole system of components to keep the crawl space dry and clean - all the time!