We store our main wood properly stacked on the property. We also have a small metal wood holder (don't know the name) that's on our porch, sitting against the house. The bottom shelf is about a foot off the porch. Then we bring in small boxes of what we will need for a day or two. I went out today to get some wood to bring in from the porch (it's oak) & 2 nasty silverfish jumped off the first 3 or 4 pieces I was going to bring in. I was able to kill them, but I know there are probably certainly more out there. I lived in another place where I had a silverfish invasion in the house that was terrible to get rid of. I HATE those things! The way I finally got rid of them that time was by using boric acid. What I want to know is if I spinkle the boric acid on the wood while it's outside, will it cause problems when it's burned? Will it create a poisonous gas or something? We already use it around the wood piles & the inside boxes. Thanks. I'm new to the whole wood thing. My daughter & I live together & we also have propane heaters. But after a $500 bill for 2 months, we shut them off. Now we're only using our Fisher wood stove & I use a radiator type heater in my bdrm. So please excuse my ignorance. I'm thrilled to find this forum!