Things You'll Need
Instructions
Clean a couple of shampoo bottles completely, unless the shampoo is a tearless variety and add 1/4 cup of tearless shampoo or bubble bath to each bottle. If it is tearless, skip this step.
Fill the bottles slowly with warm water, cap and shake vigorously until bubbles form. For a fizzier foam gun battle, add carbonated water to the shampoo or bubble bath.
Lay thick heavy towels on the floor around your tub or shower. Hand your child or significant other their bottle, pick up yours and start shooting.