[VINE CUSTOMER REVIEW OF FREE PRODUCT. Find out more: https://www.amazon.com.au/gp/vine/help]
Look, I love having chewing gum on hand and Extra is actually my favourite brand, with spearmint being my favourite flavour. I find the peppermint has a stronger flavour and is more "minty". So if you have bad breath, maybe choose this flavour over the spearmint.
Having chewing gum on a bottle keeps it fresh for longer, and it is easy to store in a drawer at work, or in your car. The flavour lasts for quite a while and keeps your breath nice and fresh.
If you regularly buy chewing gum at service stations, than this may be a cheaper option for you as it comes in a 6 pack.