Put on a pair of rubber gloves. Sweep the Drano crystals into a dust pan with a whisk broom and dispose of the crystals down the drain. Run water in the sink to neutralize the chemicals. Dip the whisk broom in a cup of vinegar or lemon juice. Pour the vinegar over the dust pan.
One of the biggest reasons people get bags under their eyes is because their parents have them. It's in your genes, and -- aside from plastic surgery -- there's not much that can be done about it. When you're young, lack of sleep, lack of exercise, a diet full of salty foods and water retention can also lead to bags.
Puffiness or bags under the eyes have many causes, including inherited tendencies. Puffy eyes caused by aging also probably would require a cosmetic solution. You might want to discuss with your eye doctor or cosmetic surgeon some of the available options to address your eyelid concerns.