Marking Magic - no need to trace your stencils, just spray on it!!! Reduce your quilt marking time by 80% Marking Magic is the revolutionary NEW product that will save you hours of tedious hand marking!! 4-Easy Steps:Step 1: Position Stencil on QuiltStep 2: Spray Marking MagicStep 3: Remove Stencil and you are ready to QuiltStep 4: Clean Up: When you are finished quilting, simply place the quilt in the washer (detergent is optional - any major brand is fine), and no residue will remain. Product Information:* One 12oz. can is about enough to finish marking a double sized quilt - naturally, this depends on the intricacy of the pattern used.* Once sprayed evenly it will dry on the fabric in 10-15 seconds.* It's an aerosol spray so you will need to use it in a well ventilated area - however once it dries there is no residual smell.* Any overspray or markings you wish to remove can be done so with plain water and light rubbing with a toothbrush or by wiping a damp cloth over the area.* It's been tested on every fabric but silk so far, with no adverse effects.* Any markings will last indefinitely without smudging until plain water is applied to the fabric.