My apartment building got purchased and it went from pet-free to animal friendly. My new neighbor moved in with a pitbull.

I live in a pre-war building so insulation and soundproofing are lackluster compared to modern multi-family dwellings.

Anyways, my original landlord retired and sold the building to cash out and get out of the game (I respect that; I'd do it too). She had a simple lease and simple rules: no pets, no smoking, no crazy partys.

Enter new landlord in January. She immediately started renovating the empty units so she could ask a premium for the units. Well, the newly renovated flat I share a wall with got two new tenants three weeks ago: a jackass and his pitbull because we're pet friendly now.

Not only does the dog charge the door to escape every time my neighbor comes and goes, it barks ALL THE TIME and has chased me down the hall twice now. He claims the dog is harmless and is chasing me because it thinks I'm trying to play with it. But harmless? It has teeth, don't it?

Basically I'm harboring resent towards the new tenant and my fear of dogs is now at level 10/10.

Advice: do those ultrasonic anti-bark devices actually work?