After they were gone, and the place cleaned out, took 3 months, roaches totally disappeared, the rental unit and adjoining units.The chief reason we found with these tenants is they leave dirty dishes in the sink, don't wipe off tables after they eat etc.

Successfully made the buzzing sound disappear but at the expense of the doorbell no longer receiving wired power!

They disappeared.

If you smile at the right people or get enough concerned citizens outraged then you can usually make injustices disappear. - I had a township change rules so I couldn’t dump construction debris in their free dump (you get 10 trips per year as part of $7000 in property taxes on a 200k home) and I had shown up in a loaded truck with my helper, while 7 months pregnant, and they turned me away.

Will they not pay rent and disappear into the night?

I told him, yes I know, I use to keep 60 watt bulbs in the storage room, they keeps disappearing, so I now supply 40 watts, hopefully people won't steal them anymore, as they're not for night time bedroom reading.

We were getting a lot of people who were not qualified so they would ask for an application and then disappear off the face of the earth!

If you only raise it to $425 with a pet deposit, watch how fast the pets 'disappear' and you have to prove they are there or they quickly become therapy pets. 

But, whatever he sprayed must completely knock out any scent they leave for other wasps to find, because they completely disappeared and they were a constant problem before - no matter how many I killed, more kept coming, until the magic, toxic stuff got sprayed on their spots.I'm afraid to learn what that stuff is, lol, but I'm really glad they're gone.  

My success on the $15k owed to me in damages and missed months was an email the length of a dissertation with a list of excuses including mold (nope, $800 of testing confirmed, they had a pet peeing on the carpet creating a bad smell) , _______'s cancer which came and went quickly, "having kids is hard", 1 of them starting college, and then an expected disappearance.