Hard Riddle 2 - Which Bottle is poisonous ? Riddles with Answers

There are 4 milk bottles, but 1 of them contains poison that takes exactly 10 hours to show effect! 🥛☠️ Detective Mehul has only 1 test rat and a total of 12 hours to identify the poisoned bottle. Can you figure out the clever time-staggered trick to solve this riddle? 🕵️‍♂️ Watch carefully, think logically, and comment your answer before the solution is revealed!