In a tea plantation the workmen were facing a continuous problem of rats nibbling away at the (drip) PVC pipelines connected to various plants for drip irrigation. The pipes needed continuous replacement and were a nuisance. So one day the workmen got together and brainstormed as to why the rats were nibbling away at the pipeline. They finally emerged with the theory that the only reason could be water in the pipelines. Then they came up with a bright idea to keep water at strategic locations. They then took coconut shells (half rounded) filled it up with water and tried the idea. They kept vigil and it worked! The rats drank water from the shells and the pipes were no longer nibbled at.

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