LOL Dee (Heaven) Kids ALWAYS spill stuff on the floor if you clean it... or tromp through mud etc. I bascially don't bother doing my floors until it becomes embarrassingly dirty (every few months) luckily these floor boards manage to hide the dirt. Disgusting hey? I'd never get away with this in our townhouses that had white and cream tiles... I'd have to mop them over every night because the dirt was so visible. Loooove floor boards. This phenomenom goes for carpet as well... the minute you have them steam cleaned they will suddenly get an uncontrollable desire to scribble on them with texta or drag in half the garden....