Many different kinds of fibre got experimented with to make up a scrubbie as shown here but the plastic twine, plarn (plastic yarn made from cutting up plastic bags), jute, wool etc. were not right for some reason or other. This sisal works. It is rough enough to do the job, light enough to not clog with soap, easy to make up, rustic looking and rustic scented (natural!).
I use it to give the sink and taps a quick wash and scrub every so often, when I am using the sink, which then prevents it from becoming a chore. No harsh cleanser is required. It also works to prevent bath tub ring if the scrubbie is smooshed around as the water is draining from the tub.
You can knit or crochet a little rectangle up in next to no time using a ball of sisal from the hardware store. I like the look of Tunisian crochet and did this scrubbie on four stitches on four or five rows. The ends could be woven in but I like the look of them left free with a few knots