first you decide what you've got to do and then you go out and do it
So, when he came into the house, the Fearless Kitten was treated for earmites. We just did a follow-up investigation to make sure that he and the Presumptuous Cat both remain earmite-free, because The Best Roomie Ever, being A Scientist* (she has a degree! in Science!) has a microscope.
She just invited me into the kitchen to examine cat earwax under 400X magnification. (No mites were present.) It has an interesting, almost crystalline structure.
*You can tell she is A Scientist not just because she owns a microscope, but because she noted : "Neither cat appreciated the sampling process."