" A bug bomb sill work too. You just need to stay out of the room for awhile when you set it off. No residue that I have found. I use them in my barn."
I live on the bug-o-rama Gulf Coast. I use bug bombs for all my insecticide needs - house and shop/RR building. Nothing else, except a little Raid in the garbage can bag every week when I put in the new one.
I bomb the house twice a year and the shop once, typically. Most years go by without seeing a roach (the Prime Target) inside. I have not seen residue on anything. I don't put one in the kitchen; the stuff permeates the whole house anyway. I cover any dishes in the drain board. I put one in the attic.
Then I leave for 2 hours; do errands; go to lunch; I open the windows and turn on the attic fan (yes, I have one - a treasure that the "modern" world has forgotten) for a while. Done. No fan - just leave them open longer.
Shop: I casually drape a bit of newspaper over my locos and cars on the layout that are nearest the bomb. No residue...but the dust may soak it up...!
Bug bombs are often characterized as hard to deal with and mess-makers. Neither is true. I do change brands as it hits me.