I go direct to a fumigation company (not a pest control company) and would expect between $1000-$1500 for a typical box style quad.The biggest problem is that any tenants have to (a) prep their food and pets and (b) go somewhere else for a 2 days.  

@Griselle Monzon, the only other local meetup that I am aware of is one that has been organized by Bigger Pockets members.

Nasty landscaping, poor dumpster placement, parking that is poorly organized are a few things that may be easy to remedy and change the perception of the property. 

MIG is a great organization. 

@Dawn AnastasiI haven't used felt underlayment in years as the synthetics are tougher and are not suitable food for mould, lichens and other things you do not want growing on your roof.

Tenants also do not like other tenants cooking very strong foods all the time like curry etc. as it wafts through to the other units.

I'd think Dunkin would be glad to get rid of the inventory even at a steep discount, it would help them eliminate a mess and you at the same time...the cost to purchase the leftover food is probably way less than installing these extra security measures, not to mention the goodwill I'm sure you might receive in return.Just a thought.

I built my buyers list pretty organically as time went on, but I mostly just sell to 2 or 3 people.

@Guy Gimenez holds one in south Austin, and @Mike Walker organizes one hosted by @Lynn Currie - great people and great content to get you started! 

We also have two real estate investor organizations in the area that are very active and informative.