Thanks SO much Pat!
Lots of good advice there. I do always water in the mornings, but nothing you can do about rain in the afternoon . . . the new starts are not in their permanent home yet, so I will space them for good air circulation, and treat them when I move them as well.
You're so right, some have it and some have none at all. Very surprising that they can breed in a resistance like that.
I'm not a fan of Bayer products either, but I do buy the 3-in-1 for my orchids, which are very susceptible to scale. A bottle has lasted me 3 years, so I sure don't use much. Probably I should use it on the daylilies before it expires.