California, don't fool with the 'eco-friendly' bedbug sprays, they are totally worthless and don't work. I'm not sure what that little one on amazon is, although it says 'non-toxic'. Well, you want toxic, you just use less of it and aerate rooms.
The strong ones you can get at hardware stores have pyrethrins in them, and they are somewhat nauseating, but they do work as preventive unless the bugs have really gotten control of the territory. When I then got professionals working, there is Permacide for the bugs and Bedlam for the eggs, which they tell you to use alternately, but you can use them however you want; the companies do a lot to try to scare you, and they can be very irresponsible.
I agree you can't be obsessive about this, even having been through it and the whole horror it is (you don't quit thinking you're seeing them for months after they're gone.) But I never think about worrying about theaters or even movies, and wouldn't even now. As forI'd say no, that's being obsessive--they can just as easily be on the carpet on the floor. Cconcentrate on hotel rooms, them forget about it. I'm sure Koch and Met Theaters are going to ensure that everything is 100% cleared there, and I even doubt that there's much serious infestation in movie theaters.
what about a plastic sheet one could use to cover a theater seat -- and then discard on the way out?
Patrick...I see that you've become quite an expert on the bedbug matters...!