Amazon has the 24-Pack Active Washing Machine Cleaner / Descaler Tablets (1-Year supply) on sale for $17 - $2 off (check “Save an extra” box, eligible on first S&S order for this product) - $2 off with coupon code BDACTIVEBSS at checkout = $12 with free shipping on $35+ or with Prime (extra 5% off for 5+ S&S orders). 

• Compatible with GE, LG, Samsung, Whirlpool, Maytag, Electrolux, etc...