Homemade laundry detergent can be made as a liquid or powder. Since neither contain a sudsing agent as an ingredient, both are safe for a high-efficiency washer. For front-loading machines that use much less water, a liquid homemade detergent seems to work more smoothly. Use about two tablespoons of your homemade of detergent. If you are using the automatic dispenser, be sure that your detergent has no clumps and is flowing well. If it is not smooth, mix the detergent with two tablespoons of hot water before adding to the dispenser.
As with any detergent, clean the washer often to prevent odor and build-up of lint and residue.