if you watch a carpet cleaner at work and still think yes then you need your head examining. I HAVE USED HIRED CLEANERS FROM WOOLWORTH'S IN NSW - TWO TYPES ARE AVAILABLE - THE BARREL CLEANER WORKS...
It jets a heated water/soap solution deep into the carpet fiber, then rinses and vacuums out the dirty mixture before it can reach the carpet pad below.
Hope this helps!
Measure the length and the width of the room in yards (to convert feet to yards divide by 3) then multiple the two lengths and then add 10% extra as overage.