With four animals and two kids in the house, our floors need daily maintenance. We have several brooms, vacuums and mops to help get the job done, but our favorite is an inexpensive dust mop purchased years ago. However, those disposable covers for the dust mop can add up, especially when you go through several a day. Plus, those covers don't break down very quickly and are just another item added to a landfill. We decided it was much better to make our own reusable covers that we can throw into the wash at the end of the day.
Cut a length of elastic. Set your sewing machine to a zig-zag stitch. Anchor the end of the elastic with a few stitches in one corner. Then, pull the elastic completely taut before you begin sewing. This is vital to get the fabric to bunch up correctly from behind. Optional: You can serge around the sides or hem it you don't want frayed edges.
Make sure you are pulling the elastic taut before you begin sewing.
Place the completed cover onto you dust mop. It should fit snugly and cover up the sides of the mop base. The dust mop is ready to pick up debris from your floors. Once you're done, shake the accumulated dirt into the garbage and toss the cover into the laundry.