hopefully you understand that the brush and scrubbing IS THE MOST important part of cleaning stairs!! when i started i only used dry foam, no water extraction. the stairs still get done that way, we scrubb with chems let dry in (10 mins )then vac again! this way the stairs never get walked on wet, in my opinion its way better, and IT stays cleaner longer.
try it 1 time you will like it too! no water just dry foam, look now ,then look next time you do the same set of stairs, if they didnt stay cleaner then before with the water extraction
james
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abc carpet care llc
america's best clean everytimeTM.