Fleas caused the death of my cat. A coworker generously brought a sample of her infestation in to the office and they must have hitched a ride home with me. My cats were indoor only, I didn’t expect them to need flea treatment. The fleas gave him hemobartonella and almost $20,000 later, we couldn’t get the anemia under control.
Nuke the fleas.
Trebuchet?