Hi, does anyone know about the health risks of these dyes? According to the blurb available on them they are not harmful to fish at the levels normally used. I'm wondering what effect they would have on birds if mixed in with their seed on the bird table.
Reason being that I'm fed up with white streaks on my windows, the local birds seem particularly adept at pooping accurately onto the glass as they fly over, so at least mixing a bit of colour into their food would make the streaks a bit prettier. Failing that maybe an assortment of food dyes could be used?
If nothing else it would confuse the heck out of my neighbours :-)