Call the police and register the noise complaint. 3 strikes your out.

The way I would handle it would be heavily shaded by my normal business practices and by the reputation and relationships I've built up in my area as a professional low-C'class andlord.My first call would be to my friends on the local police force, officers who know me. 

On Easter Sunday I had a tenant call me and tell me that state troopers were in the parking lot talking to another tenant.I followed up with the tenant who was talking to the police and heard nothing.

I'd tell the tenants to call the police if the neighbours are harassing them. 

If I really thought I was going to get fined and arrested I would go to the police station, explain that I was a landlord and that my tenants really needed the dryer because that one was dead and I am only going to HD and getting a dryer and bringing it there, and we will all maintain distance. 

Let them call the police and see that NOTHING happens.

I wouldn't need to evict him, the police could remove him that same day. 

It's just not something that's likely to happen.Fortunately, we had a police department that took harassment seriously, and they'd either call the harasser on the phone and explain how they could get arrested, or they showed up. 

He never mentioned the incident to anyone nor did he file a police report.

Now people are literally running police out of the city such as Capital hill.