Recommended portable mouthwash

It is a concentrated mouthwash that is great for carrying around and using because it is super small. I usually use large-sized products like Listerine, but this was my first time trying a concentrated mouthwash, and I liked how convenient it was. You pump out 1 or 2 times and dilute it by pouring water up to the notched line on the cap. While it doesn't feel as refreshing, it has reduced my dry mouth symptoms! It is a compact size that is great for carrying in a bag or keeping at the office.