Homemade Laundry Detergent Powder Recipe! {Large Batch}- laundry soap powder laundry soap laundry soap powder ,Sep 10, 2012·So I decided to make a Homemade Laundry Detergent Powder form of homemade detergent. I had everything I needed on hand (I finally used the Fels-Naptha my mom gave me when I got married, 13 years ago), so I hung up the phone and proceeded to make a small batch of homemade laundry detergent.Homemade Laundry Detergent Powder Recipe Like Ivory Snow ...Ivory Snow Powdered Detergent 24 oz.equal to 15 loads sells for $5 per box on average = $0.33 per load. Dreft 53 oz. Powdered Detergent equal to 40 loads sells for $12 per box on average = $0.30 per load. Our homemade laundry detergent is 90% cheaper than the store-bought detergent!