"In some countries such as Australia, New Zealand and the USA, you can buy borax in the laundry and cleaning section of your supermarket. Brand Names: Boraxo (USA, Mexico), Hovex (Australia). I have heard that 20 Mule Team (USA) is now scented - if it has an added smell, it is obviously not pure. You can also buy boron tablets online.
You may be concerned about the warnings on borax containers and some of what you read on the internet. However, borax's toxicity is less than that of sodium chloride (salt)."