1 head of garlic, cloves separated and smashed (no need to peel)
1 qt. boiling water
1 tsp. castile soap (Dr. Bronners or similar)
Steep garlic cloves in boiling water in a sealed container overnight.
Transfer to a spray bottle, straining out solids.
Add castile soap and shake well.
Try to use the same day as it will lose potency.