Plax is a mouthwash by Colgate which is used widely here. This is one of my favourite mouthwashes. Its good for getting rid of the garlic. it lasts for up to twelve hours.
You can buy them in most places for $9-$10 for a one litre bottle which will last a while. I bought a small sample of this at Big W just to get rid of that garlicky smell from lunch for $2 and it worked.