“What is the best mouthwash for bad breath?”

If you work out hard and sweat a lot, do you put on cologne to take away the body odor? No, you shower. Likewise, first you need to see a dentist, get a cleaning, learn proper brushing and flossing techniques, and practice them daily. Once you have reached a state of good oral health, some people still have bad breath. Rinses containing stabilized chlorine dioxide are helpful in eliminating bad breath for them. If you ignore my advice and just use the rinse, you will be wasting your money and allow gum disease to get worse. which could lead to premature tooth loss.

There are many reasons that one may have bad breath and you have to address the underlying cause. Bad breath could be a result of gum disease, poor oral hygiene, acid reflux, defective tooth restoration that allows for the accumulation of food particles, infection, nasal drip, smoking, underlying medical conditions, and dry mouth to name a few. To answer your question; I am pretty sure there are many products out there, but one mouthwash that I found it useful for bad breath is Oracare.

Probably listerine or diluted hydrogen peroxide 50/50 w water. Smell can also come from tartar buildup, so get your teeth cleaned. Cavities are bacteria that can add to smell. The tongue can harbor lots of things so use a tongue scraper. Sinus/allergy drainage can be part of problem. Also gastric reflux

Mouthwash is only a temporary (lasts about 20 min) cover up for bad breath...which can be caused by tooth & gum problems, sinus drainage, or certain foods (garlic for me!) that linger from stomach. You have to address each of the causes. Get regular dental cleanings, use floss (unwaxed), brush after eating, clean the back of your tongue (some use a tongue scraper). Beware of some of the odors in what you eat. Use a mouthwash occasionally (do not use regularly) and pick one that says it decreases sulfur causing bacteria on the label.