If your hot tub or spa needs a better balance control, look no further than the Rendezvous Spa Specialties Spa Filter Fresh Bottle (3 Pack) This bottle works wonders on your spa or hot tub, so you can relax and make the most of your "me time". It accomplishes this luxurious spa experience by improving the effectiveness of your spa filter. You'll love how this powerful formula removes grease, oil, and scale. Just use it in an overnight soak to work wonders on your hot tub or spa. It's a soak-and-rinse formula that works with all sanitizing systems for a fruitful spa day. Now it's time for you to treat yourself. You deserve. Give yourself the best sort of "me time" with the Spa Filter Fresh.