This is a chemical barrier that is applied to a building prior to throwing the concrete slab. Its purpose is to prevent Termites (White Ants) from gaining access to the building and eating skirting boards, built-in cupboards or any other timber in the building.
This chemical is applied by means of spraying the soil with an approved Termiticide. It is of utmost importance to have this done by a professional company who applies this correctly and issues a 5 year guarantee.