Drano is a clog-removing product that the Johnson cleaning product company makes. The official Johnson slogan is "Johnson -- A Family Company." You can get information on the full range of Johnson products by visiting the official website.
The official Johnson company website, where the Drano products are featured, advises that Drano is safe to use in your garbage disposal. You should not use Drano in your toilets, but garbage disposals are okay.
Open the bottle carefully. Do not squeeze it because the solution is in a squeeze bottle that can spurt easily. To open, push down on the cap with your palm and turn it counterclockwise. Pour half of a 32-oz. bottle of Drano into the disposal. Wait for about 15 to 30 minutes. Turn on hot water to flush the Drano. If the clog does not release, do not turn on your disposal, because the disposal could make the Drano spurt up from the disposal.
Purchase Drano from an online vendor selling household products. You also can find Drano at hardware stores, home supply stores and construction supply stores.