This is a repackaged version of the Costco-sized Oxiclean, offering 1900g for easier home use. It's an oxygen-based bleach that can be used for various purposes, including removing yellowing and dullness from laundry, and cleaning around the kitchen and bathroom. 【Product Details】 Product Name: Oxiclean Max Efficiency (Oxygen-based Bleach) Contents: 1900g (repackaged) Form: Powder Category: Laundry and Household Detergent/Bleach (Chlorine-free) Container: Zippered bag (transparent, allowing contents to be seen) Source: Costco (5.26kg large box) Purchase Date: Around December 2025 Condition: New and unused, repackaged 【Main Uses】 Soaking laundry (yellowing, dullness, sweat stains, etc.) Odor control for sheets, towels, uniforms, etc. Bleaching kitchen sinks, cutting boards, and dishcloths Cleaning bathroom floors, chairs, washbasins, and veranda tiles, etc. ※ Before use, always test a small amount in an inconspicuous area. ※ Please refer to the image descriptions for detailed usage instructions and dosage guidelines. 【Important Notes】 ・ Never use in combination with chlorine bleach. ・ Do not use on metal containers or items that cannot be washed with water, such as wool and silk. ・ Store out of reach of children and pets, in a cool, dry, and dark place. ・ This is not food. Be careful not to swallow. ・ Due to repackaging by an individual, there may be slight powder spills or clumping. There is no problem with the quality, but please refrain from purchasing if you are concerned. 【Shipping】 ・ Boxes and instruction manuals are not included. Please refer to the product images and web information. https://www.costco.co.jp/c/Oxiclean-Max-Efficiency-526kg/p/28137 ・ Shipped via Yu-Packet Post (anonymous delivery). ・ Double-packaged with a zippered bag and an outer bag to prevent powder leakage as much as possible. ・ Due to vibrations during shipping, there may be wrinkles on the bag and some powder may adhere. Please understand this beforehand before purchasing. Thank you for viewing. Features...Contains bleach