It had been a wet season. Not only was Theodore’s driveway slippery with moss, but the roof of his house and guttering had sprouted lichen. There was only one thing for it: he had to spray.
The problem was that his water supply was rain water. He lived in the country and it was the roof that filled the water tank. There were two pipes flowing from the guttering to the water tank. Theodore disconnected them and safely sprayed. After a week or so and several heavy rains it would be safe enough to reconnect the pipes.
What Theodore didn’t know was that there was a third pipe. Unbeknown to him the spray had run into the tank.
Theodore got an upset tummy. He felt increasingly sick throughout the week. He went to the doctor.
“Ah!” said the doctor, “a simple case of stomach flu.” He gave Theodore some pills and said “Avoid dehydration. Drink lots of water.”