Minimize maintenance time and improve your results with Leisure Time Boost Spa Shock. This powerful spa shock treatment doesn’t contain chlorine, but it still has the ability to break down a variety of organic materials in your spa, as well as oils and lotions that can diminish water quality. This product works alongside the top-rated Leisure Time Simple Spa Care line of products. To use Leisure Time Boost Spa Shock, simply add it after Control during your start-up. Control should be added on a weekly basis, with the amount added being based on how frequently your spa or hot tub is used.