As of June 2015, patterns for scrubbies are available online at Maggie's Crochet, Mother Earth News and About.com. Maggie's Crochet pattern requires 2-inch strips of nylon netting knotted together and an N crochet hook. The directions use slip, double crochet, half double crochet and chain stitches.
Mother Earth News' scrubbies are crocheted in a similar manner. However, they begin with 1-inch wide long strips of nylon netting so the fabric is easier to manage. An H, I or J hook is needed. The site has instructions for both a small and a large scrubbie.
About.com has directions for a scrubbie made from plastic grocery bags and a plastic mesh bag, such as one that holds oranges. Using a size K hook, one or two cut-up plastic bags are crocheted into a circle. A section of the produce bag is sewn on the circle using a tapestry needle.
In addition, About.com has a pattern for a similar pot scrubber. However, unlike the circular scrubbies, the pot scrubber is rectangular. Its material also comes from a heavy mesh bag that held oranges or other produce. The crafter cuts the bag into a large rectangle and then folds it several times. Crochet thread holds the scrubber together.