So I've done this before. Back at the bar. I used to HATE it when certain people came in. There were regulars that would suck up a bar seat for a whole night sometimes, leave next to no money, be abusive, irritating, annoying, demanding, whatever. Finally I got the idea to create a servitor, a tulpa, a Magickal (ie Will controlled) thought form that is programmed, much like a computer is, to do X when criteria Y is met. For the bar I named the servitor Karla, after Karla from the 80's television show Cheers, a no-nonsense bitch of a waitress that wouldn't take shit from anybody and would easily chase unwanted clientele from the establishment. I 'programmed' X = make undesireables leave the bar when Y = I drank tea. I don't know why I used that, but it worked. In fact, after I did that several of the unwanted regulars disappeared, hardly ever to come back.
Now at the bookstore we're worse than the fucking bar, especially of late. We have DROVES of high school kids who come in, take up all the seating, buy next to nothing, fuck things up, act like douche bags, are LOUD and all of this makes our (management) lives that much harder because not only do they annoy us, but they annoy our customers (many of whom are fucking annoying too) and then they complain to us. So guess what? Yep, I'm going to program a new servitor and attempt to attach it to the store. We'll see if it works.*
*some people would no doubt hear about the accomplishment at the bar and say, "oh, that's just a coincidence. you've convinced yourself that it worked, but it just happened to coincide," to which I would answer, "Who cares, as long as it works". That's the point of 'Magick' or whatever You want to call it.