Scotchguarding

Scotchgaurd is excellent in the case of spillages and dirt, but how likely are you to have spillages on the stairs? Presumably your hall will have a doormat so any outside dirt wouldn't find its way in?

For the sake of £70 get it done.
When my family were young shoes were not wiped properly and they would run straight upstairs .
When my H was older he would bring me a cup of tea and slop it on every stair.
He had dementia so telling him not to was useless.

Yes, I agree with Annsixty.
These welcome cups of tea in bed, do get slopped about! My DH brings me one every morning, and resists the idea of using a small tray. Why?

Yes, I would.

I decided not to have our new cream suite Scotchguarded because I was rather worried about the chemicals - one large glass of red wine later I wish I had!