This page explains how to solve the quest "Lock It Down" in Yo-kai Watch.

Start the Quest

Talk to the police officer standing near Sunshine Station in Blossom Heights to start the quest.

Deal with the Yo-kai!

Go around to nearby apartments and houses, looking for a question mark on your watch. When you find one, use the Lens to reveal the Pandle, then talk to it and defeat it.

Talk to the officer!

After you have defeated all the hidden Pandles, talk to the officer to complete the quest.