I don't see why you couldn't contact them and simply as for the contract to be returned either signed or unsigned as in brought back unsigned if they have decided on a different daycare or signed if they wish to join your daycare. I probably would only ask once and then let it go. In the grand scheme of things the paper and ink to print a contract is really not that expensive. Some providers have a registration fee of say $50 for a family signing on to go towards child specific things like bib, highchair - and future replacement as well as individual change mats, etc. and part of that compensates for printing the contract. Many parents like to take the material home and read it through at their leisure so they know exactly what they are signing.