Call up a few PM companies and see if they will tell you who they use.

It took some digging, working closely with a title company, and negotiating with multiple parties to get it resolved, but in the end, it was a great learning experience—and a successful deal!

Or the listing agent.If you have a provision on assigning leases to the buyer and transferring security deposits in the Offer To Purchase (in Wisconsin that's part of the standard form) the title company will put the SD as a line item on the closing statement.

Quote from @Adam Sieg: I’ve used all but the only company I continue to buy through is R2R.

Talk to the pest control company and let them know.

If losses strain your finances, selling might be the best move, but optimizing rental income or tax deductions could make holding worthwhile.This post does not create a CPA-Client relationship.

This will be some management company, right?

You'll need to hire a title company to find out. 

If you can’t increase cash flow or refinance soon, selling could be the right move.

I'd also start the marketing process 30-45 days before current tenants move out in most cases - it just seems easier to re-let a place that is currenlty occupied than one that's been sitting empty for a while for some reason.