Price drop! 1K+ bought in past month. Amazon with Sudstainables has the 24-Pack Sudstainables Washing Machine Cleaner Tablets for $7.06 - $3 off (check “Save an extra” box, eligible on first S&S order for this product) - 10% off with Subscribe & Save (can cancel anytime) = $3.35 with free shipping on $35+ or with Prime.