My dishwasher and sink aren't always draining properly. I have had the dishwasher manufacturer have a look at it, and he suctioned out a bit of glass from the pipe and all was well for a couple of cycles. Then it started not draining properly again.
A friend with one of the suction pipe machines has since had a go, but nothing there. I have also spent a fortune in Mr Muscle Drain Unblocker and every other unblocker on sale at Tesco!
My mum mentioned that many years ago she had a similar problem, and the plumber who came out poured some mega strength acid down the drain. She said he warned her it was very strong, and had to wear gloves even to pour it as it would burn skin very easily. Whatever it was, it worked!
Would anyone have any idea what this would be, so that I can give it a go? I really don't want to have to buy a new dishwasher as I don't think the dishwasher is the problem.