TopBait Plus bait is a pesticide specially formulated as a gel. This product was developed to combat small hive beetle specifically. You should use it in conjunction with Apis traps or similar. Fill the middle slot of the trap with the gel, and check it every month in spring and summer. Place the trap at the top of the hive. Do not put the gel directly into the hive box.
We recommend that you make sure that your hive is not subject to flooding.