I ordered these branches for my birds. What is the best way to make sure they are clean and safe enough for them..?? They won't fit in my oven and I'd like to keep the bark on. I put them in boiling water in the bath. Can I spray f10 on them, would that, boiling water and steaming be enough..??.......is f10 safe to use on branches with bark on that they are going to chew/eat..??