Mice problem in Dorchester, MA. Exterminator needed!

[Marc V Palmeri]

hi,

i also have a mouse problem in the 1st floor unit of a 3 unit condo building in dorchester, ma.  does anyone have an exterminator they could refer me to or any advice on how to protect my tenants from rodents?  the exterminators i've spoken to want to do the entire condo building, including each individual unit and charge $1K+.  i'm hoping to find someone that can either do it a little cheaper or that can do just my unit. 

thanks!