The Best Way to Shut Down a Company

If there is a company you truly don't like either because they do evil things or are a major competitor of yours then use this strategy to bring them down.  First acquire a job at said company.  Start regularly bringing in tasty snacks and setting them on the lunch/breakroom table.  Then once it has been established that there is a trusty food source in the office, insert lots of exlax (or other more potent ingredients) into your treats.  This will stop all operations in this place for a day or more depending on what special ingredient you use.