only need a tablespoon per load NEVER purchase another laundry detergent brand. This has inspired me to make more homemade cleaning products :) very exciting! Laundry soap recipe - for months' worth of soap.
Simply Designing with Ashley: Homemade Laundry Detergent - Been using this for a year, and only have to make a new batch about every 6 months. I use fels naptha rather than ivory, and I just put it in (Things To Try Laundry Detergent)