This doesn’t even seem like the most egregious “weird warning”.
Thinking you can use a pet urine cleaner for fibres on a shaggy dog isn’t madness, it’s just “nope, actually a skin irritant”.

It can be funny when the legal department’s Cover-Your-Ass labelling conflicts with marketing.

Then why make a shampoo for cars and pets?

They forgot to warn you about not using it as shampoo. They’re so getting sued.

Ive heard about the dog owner who washed thier dog, and used the microwave to dry it. Didnt end well.