I had mice in my apt, I immediatley called Miami Mice Exterminators. It took 2 weeks for them to get rid of all the mice that were present in the building. However what they did was not a very hard thing to do. If you have mice in your apt, you can catch them by buying a few traps(especially those that are stick cathes small mice), but it is too hard to handle the disgusting part, that is to handle the trap that has the dead stinking body of the mice. Thats why i would say you may want to hire an exterminator to do the job for you. Miami Mice Exterminators do their job well.