"Paper2002AD" wrote in message
...
More pumping and bucket full of water poured as fast as possible from
3' above the pan, a flush is pretty pathetic compared to that.

--

Thanks to all who replied - I will try more pumping etc, as well as hot
water -
but any chemical remedies?

Stuff a hose down - flexible ones will get round the U bend with some
encouragement - then once it's a long way in turn it on and push.