The Varroa Check Container is an effective tool for monitoring mite levels in your hive.
To use, fill the bottom jar with 50–100 ml of rubbing alcohol or windshield washer fluid. Add approximately ½ cup of bees (about 300 bees), then gently shake for about 90 seconds. The liquid dislodges the mites from the bees, allowing them to fall through and collect in the bottom chamber of the jar.
Once complete, the mites can be easily seen and counted in the lower jar to assess infestation levels.
Ontario Beekeepers Association treatment guidelines: https://www.ontariobee.com/sites/ontariobee.com/files/Treatment%20Recommendations%202017-11-02.pdf
