The late Geordie Tuft was a bit of a character in Northern Ireland, and people used to ring in to radio Ulster to ask him questions as he was a country man and kept dogs and ferrets and goats and stuff.
One day an old lady phoned in and asked about fleas on the dog, "Give him a dip in a barrel of water with a few capfuls of Jeyes Fluid" he said.
A few days later she rung back - The dog has lost all his hair, Geordie asked how much Jeyes Fluid she used, a couple of bottles like you said!!
Good old Geordie