So you have found Tanalised wood otherwise known as Eco wood and sold locally.
So is it safer?
Use gloves and full body protection when handling as the Material Safety Data Sheets suggest.
The chemical treatment agent is NOT suitable for contact. One user recently lost all feeling in the fingers after bare handling the product while doing a garden project, and then peeled from hands, knees and elbows, where contact had occurred.
dead skin peeling off after exposure
http://www.archchemicals.com/Fed/WOODAU/Products/default.htm?selApplication=australia.htm
Also it is worth reading the MSDSheets for the chemicals used.