Stahp.
Im not terribly interested in further reducing the amount of rads within a world.
Ive added some more industrial strength radaway into the spawn lists, made them edible by NPCs, and while I havent tested if an NPC will eat them on their own there is nothing stopping them from doing so, nor you giving them this stuff.
Mutations are a part of the apocalypse.
Radiation is a part of the apocalypse.
Not the only part, or even a large part, but a part. and given the type of weapons and warp hijinks going on in DDA its a relatively under-repped part.
I have nerfed the smokers rad emissions.
I would consider adding a special attack function to zombies that grant them small amounts of rads per strike, but I suspect people will be saddened by this.
Venomous creatures also inject small amounts of rads into you when they inject you with venom.