When we bought our house 10 years ago I repainted almost all of the interior walls. I was unaware that the previous owner had re-painted at some point and must have painted latex over oil-based paint. Soon after moving in the paint began to crack and flake off the walls. With 4 small children, I have never had time to re-do it. It has been flaking off and falling on the floor for years. Each time I vacuum, I use the floor tool to suck more of the flaking paint off the walls, but there it still about 40% of the flaking, crackled paint on the wall. I need a quick, easy and simple way to remove it. Is there one or am I going to have to sand all of it off?