Would you like to unblock an outside kitchen drain with minimal effort? or perhaps you’d like to save some money and save yourself the task of. Year warranty as standard for complete peace of mind. Best banks for dealing with fraud. Troubleshooting: remove and clean the drain stopper next, try using the humble drain plunger, keeping in mind to block the over-flow drain in the tub or sink if that doesn't work, remove the drain elbow joint and clean it out clean drain stoppers routinely.