While many homemade bubble solutions call for the use of glycerin, there are a number of ways to work around this. Using certain brands of the foundational soap ingredients and/or substituting the glycerin with other things can help to produce higher quality homemade bubble-blowing solutions and help your bubbles to last longer.
Measure out 11 cups of room-temperature or lukewarm water, pouring them into the milk jug as you go along.
Add 4 cups of liquid dishwashing detergent to the water in the milk jug.
Add 1 cup of corn syrup to the detergent/water mixture.
Place the lid back on the jug, and gently shake and swirl the liquid around to mix it. For best results, do not shake vigorously enough to create a lot of foam.