I HAVE USED A SURFACE CLEANER ON WOOD(ANY KIND) EVEN WHITE CEDAR, FOR YEARS! YOU DO HAVE TO CUT IN WITH THE LANCE. SOMETIMES I JUST USE THE LANCE. MOST TIMES (WE CALL IT THE SPINNER) WE USE THE SPINNER, DOES GREAT JOB AND IS FAST NO QUESTION. ONE THING THOUGH OUR'S HAS NO WHEELS! I DON'T SEE...