I personally just "have" them for guidance & the first line of my T&C's says by using us you agree to our T&C's Blah d Blah d blah, I don't give them out or get them to sign on all my cleaned slips it states at the bottom T&C's apply, then leave it up to them to find it cos its on my website for all to see ,If they have no PC then they can always ask for a copy
Chris