BTW, asked the maker of F10SC why it's not on the US market anymore. They bounced the question to another person since they don't seem to be aware of the fact it isn't on the US market. The plot thickens? Because it seemed to be going out of stock in 2019. The avian community also relies on the stuff for a host of things. (I was searching for it). So we'll see if I get a definitive answer.