Hello - first let me say that I am new to the forums, so if this is the wrong place to ask this question, I apologize. Also - I'm new to birding so if this is a silly question...well, you know.
I'm wondering if anyone can recommend a safe or non-toxic stain or sealant that I can use on bird houses that will not cause harm to the birds, their eggs, or the fledglings. Last year I put up a couple of bluebird houses on my land, and was pleasantly surprised to have a couple Eastern Bluebirds move right in. They raised two broods last year; the bird houses were just raw wood with no stain or sealing applied. As you can imagine, the weather takes its toll. I took the houses down for the winter, and am getting ready to put them back up. I would like to stain and seal the outside of the houses first, so that they last longer. However, I was hesitant to use an oil-based sealant as I would on most outdoor wood items, as I don't know if it will effect the birds.
Can I just use a normal oil-based stain and sealant and just make sure it is completely dry before hanging the houses? Or should I try to find a latex (water-based) stain? I guess even with water-based there is no guarantee that it won't be toxic. Any recommendations would be appreciated.
Regards,
Fred