I just can't see how....................................
Says it all , bonnetting , however much you cannot comprehend it ,is a valid , honest carpet cleaning method that is different, to HWE , not better or worse just different.
Chem-dry, heavens best , dry fusion and dozens of other bonnetting systems are honest , proven systems of cleaning , as much as this is painful for you , it is true.
Yes flushing may be advantageous in a care home environment , but as has been said , chemical action is important too, as is client willingness to pay ,noise, access and other factors.