So last night we discovered that we have at least one rat living in a pile of rocks that acts as a retaining wall for a bank on our property. I've been eying this as a potential problem for a while, but just haven't gotten around to doing something about it. However, now that I know there's a rat living there, I've decided to suck it up, remove some of the rocks (to make some space) and build a concrete retaining wall. Problem is, I kind of want to be able to get rid of the rat as I'm moving the pile (the placement of this pile makes traps and poison a bad idea as it's close to our birds). Any suggestions on how to proceed? I basically want to kill the rats as I'm moving the boulders, not flush them out towards my neighbors.