And if so, why is it your favorite kind?I did, but it got discontinued in 2017 and is hard to get now. You can on Ebay for ridiculous prices. My favorite was Mentadent with the bas... moreAnd if so, why is it your favorite kind?I did, but it got discontinued in 2017 and is hard to get now. You can on Ebay for ridiculous prices. My favorite was Mentadent with the base pump. I liked how the pump worked and how it separated and put together the baking soda and the peroxide with two separate sides.Luckily I still have one refill left for my pump in my bathroom cabinet.