I've never had to clean any of my tubes, just rinse them with water. I've had zero luck in cleaning the syringes but as Christine noted in another post, I'm tough on them since I grind up pills and syringe them down. Time release capsules clog up the tube as did Vicodin. Wine goes down easily, beer fizzes up in the syringe and tube too much.
The only slippage I have is when the tube falls out.
Charm