PLEASE HELP ME......We have bought a old home (build in the late 50's)with hardwood floors throughout...the older lady went to nursing home, left 4 cats in home...family memebers would feed cats every other day...BUT the cats soiled and threw up hair balls EVERYWHERE over a period of 2 yrs ...how can I just CLEAN the floors first...they have never had ANY polyurathan or any kind of a sealer put on them... they seem to be bare wood. PLEASE HELP ME.... thanks Missy