Found this on a great site I am on The Prairie Homemaker

Dishwasher Soap

Ingredients:

1/2 cup liquid Castile soap

1/2 cup water

1 teaspoon fresh lemon juice

3 drops tea tree extract

1/4 cup white vinegar

Directions:

Combine water and liquid Castile soap. Stir and then add lemon juice, tea tree extract, and vinegar. Stir until blended evenly and store in a squeeze bottle.

Use 2 tablespoons per wash in a standard-size dishwasher.

Note: Do not substitute conventional liquid soap for the Castile soap unless it is a "low sudsing" soap. Regular soaps will produce too many suds and overflow the dishwasher.