Anytime we have rat droppings or any signs of mice droppings, we want to find out exactly what it is.

Puns are the droppings of soaring wits

You couldn't take a step without stepping in goose droppings.

I have a very bad relationship with mice.

The cat with gloves catches no mice.

This is very encouraging because it says that in mice we don't find any abnormalities, so then it is very likely that the human lines are normal, too, but it is still something that has to be done formally.