I just removed a built in dishwasher. What I found under it was a mess. It had leaked and now I'm trying to get all of the partical board out. Which it's not coming out. The space measures 21 1/2 length and 2 ft wide. Any ideas as to how to get it all out. What to repalce it with ? I paln on painting the area with kilz. After I do that I'll need to replace the partical board that was under it. My other problen is that I just had new carpet laid so it right up to the area of where the dishwasher was. I want to try and do this myself as little money. Any type of little sas to use? I do have a circle saw but not sure what blade to use or where to set it. The partical board is 3/8's wide. Can I replace it with smaller width plywood as the dishwasher sat really tight in the area?