A horrible disease has broken out in the Kingdom of Faroffia. There is a wonder cure, and you have a 1000 bottles of it which must be distributed today to save the kingdom. Unfortunately, you have just found out that one of the bottles is contaminated with a deadly poison. You have a supply of laboratory mice which can be used to test for the poison, but because it takes some time to have its effect, you only have time to conduct one test.

How many mice do you need in order to find out which is the poisoned bottle?