The BobVila article recommends various laundry detergents to combat hard water stains and mentions Charlie’s Soap Booster & Hard Water Treatment as the Best Detergent Booster. The article praises the product for containing biodegradable phosphates that soften the wash water and promote the effectiveness of laundry detergent to clean and whiten clothing. It also mentions that the formula fights stains and rinses away clean, leaving behind residue-free laundry. The article notes that Charlie’s Soap booster comes in a plastic pouch with an easy-to-open hook-and-loop zipper and is safe to use in standard and HE machines.
Why use Charlie’s Soap?
Each of our products has been — and always will be — carefully crafted to get the best possible clean while maintaining the integrity of your fabrics, your washer, and the environment. Charlie’s Soap has come a long way since 1976. However, one constant has remained: our commitment to our formulas, the environment, and to you.
Take a look at these products!
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Natural Powder Laundry Detergent
Price range: $14.99 through $54.99 Select options This product has multiple variants. The options may be chosen on the product page -

Natural Liquid Laundry Detergent
Price range: $15.99 through $139.99 Select options This product has multiple variants. The options may be chosen on the product page -

Laundry Detergent Packets: Safe & Eco-Friendly
Price range: $15.99 through $21.99 Select options This product has multiple variants. The options may be chosen on the product page -

Biodegradable Laundry Pre-Spray Stain Remover
Price range: $14.99 through $36.99 Select options This product has multiple variants. The options may be chosen on the product page