monkeys
Dear Ravi,
One of the best and cheap solution I have noticed in one of the farm is:
1. Turn on a FM radio for 24 hours a day, with a mediun sound.
What happens is that, the monkeys will not come to a place where humans are speaking to each other. So, monkey believe that some people are present, hence, they don't come.
Please inform this forum about this technique once you find it successful.