my cat has fleas I have no idea how...
→[More:]She hasn't been outside since we brought her home- more than two years ago. My best guess is someone else's cat has them and either me/the roommate brought them home on our clothes, or they brought them over.
So, fun.
Oh, and how I found out? Well, my special special kitty didn't think to scratch, or act in any way different. Nope. I found out because I'm SEVERELY allergic to flea bites and my legs are a mass of open wounds from them right now. Checked the fur... and yep, there they are.
I suspect this is going to be an insane pain in the ass to correct. And the cat still doesn't seem to notice anything is wrong with her.