Reminds me of the story of a man who travelled by train to the city every day and every day, year in and year out, he would carefully shred his newspaper and spread it on the floor around his feet.
Finally one of his fellow passengers could resist no longer and said to him:
"Excuse me for bothering you but I've watched you do this every day for some time now and I just wondered why you do it."
"Oh," he replied, "It keeps the elephants away."
"But there are no elephants in Surrey."
"I know. Effective, isn't it."