I had successes with traps but my problem is that I need to find a way to dispose them afterward; this usually means getting up on your vehicle and relocate them somewhere...one at a time.
A bait station with bait seems to be a better solution for me, since I don't need to worry of disposing them, and apparently they'll die away from your house.
I made my self a few bait stations, using 4" ABS pipe but open on both ends, I secured a few baits in the middle of the pipe. (got this idea from someone's review at Amazon's). The squirells/Rats can go in and out freely: and noticing that they have been chewing on them!
When my supply of "Tomcat Rat" baits are exhausted I will get the Wilco squirel bait instead..., thanks Jeff!