Suggest you play 1812 Overture at full volume, leave it on continuous/repeat for the rest of night, then go to all night diner & have a really nice breakfast. I did something similar, in an afternoon (Went to cinema); next few weeks it all went everso quiet then they moved out! Hurrah!! You may have to do this more…

Others have said same as you, & I’d rather these than use a load of cancer causing chemicals