Help! I have a stack of post oak and mesquite wood that I use for smoking and inadvertantly, the stack was sprayed by the pest control man during his routine outside spray. I've been letting the wood sit for several weeks and it has rained numerous times on it. But the question is....is it safe to use for smoking? I use a Tejas smoker with the fire box located to the side of the grilling area. I presume the effects of the spray diminish over time, but I'd like to have another opinion. Thanks.