Costco: $30 Off HTH 3" Chlorine Tablets For Pool Sanitization, 40 lbs * Limited time only. * Selected item only. * While supplies last.  * Limit 10 per member.  * State sales tax may be due on all or part of the pre-discounted price of items subject to instant savings.  * These taxes, if any, are in addition to the amount that you are paying for the product. * For full Terms & Conditions please see Costco website.