Step 1. Capture a BAzeek (it is easier when they walk right in your front door).
Step 2. Pluck out his eyeball.
Step 3. Scry on him mercilessly using his own eyeball. (this is due to your poor lack of supervision. BAzeeks are known for the craftiness and thus he escaped).
Step 4. Show up unannounced and kill him. (this part is more difficult than this step implies).
Names have been changed to protect the identity of the BAzeek.