yea just an average pillocase its worked for me in the past i used playsand and thats really dirty but it cleaned it really quick.
Like to explain what the method is for cleaning sand this way,is it just a case of putting sand in pillowcase and then running water through it.
I would be really interested to know as I have around 150-200 lb of sand to clean soon and not looking forward to doing it in a 5 gal bucket a few pounds at a time.