I was sprayed again....still feel

the odd one, like right now!
I'm fixing up my place, starting with a new twin bed. I have a double bed, which takes up too much space in my tiny apt, plus it's old.
Because of the bugs, I'm very careful about quickly put the mattress cover on, so bugs don't get in....
Experts on the net say you don't need a box spring, contrary to popular opinion. In most cases.
Instead, I have a piece of plywood.....I'm also very careful putting a plastic encasement on it so bugs don't lay eggs on it or whatever.
(I have a piece of plywood just in case, plus I don't want a really high bed. The lack of box spring will lower the height.)
Peter
Peter