I didn’t know I was supposed to treat with safeguard 5 days in a row… I will continue treating for 4 more days, then.

I thought it was a one-time sort of thing, with a follow-up treatment a few weeks later just to make sure.
I could barely spot any lice or mites on her, apart from a few on her eye. So far the diatomaceous earth is working. Suzy-Q was just as bad, and thankfully, from what I could see, she didn’t have a lice one when she died.
I’m afraid of pesticides and herbicides of any kind and avoid them if at all humanely possible. Especially since I grow my garden in their run area.
But once I know one has had a bad infestation I keep a good eye on them. I normally make a habit of pouring a generous amount of diatomaceous earth onto their dust-bathing area. That helps a TON in keeping parasite levels down. I’m going to start doing regular “lice checks” too. And general wellness checks. Hopefully that’ll help me catch things before they get bad.
Thank you for your kindness, and patient advice! Merry Christmas Eve!