I found (don't ask how) in my son's bedroom a small square of serrated blotting paper with a pattern printed on it which, in my limited experience, I would assume is LSD, although it could be fake. Without getting in to the matter of asking him about it, which will mean how I came across it, how do I dispose of it? I don't want to put it in the bin to go into landfill. Can I safely burn it? If I hand it in to a police station, won't questions be asked?