I use corn cob media from a gun shop just off Guildford Rd in Mt Lawley / Bayswater and put a squirt of liquid Autosol in with it. Do not get the "tufnut" media that is treated with rouge they also have there as it stains your parts red.

Cheers mate. I'll go to my local gun shop and see if they have some. Otherwise I'll have to order it or come up to Perth.