I think milks sound like they are pretty much like rubber boas around here in that, some people seem to find quite a few easily, others can look for years and never find one, even if they are in the right place! In all the years I've been here, I've only found 3 (boas) and that's when I wasn't looking for them. And yet, I see kids sometimes with hands full of them. Oh, same goes for rosey boas. In San Diego I used to see kids carrying several of them and finding lots of them. I only found one in 4 years.