Mouse in cheese - bleech!

News reports today speak of the (bleech) discovery of a dead mouse (well, how could it be alive?) encased in a block of Ontario cheese (Maple Dale brand -- perhaps I'll stick to Kraft for a while...). The cheese had all sorts of stuff added -- veg and pepper etc.

The reports say the mouse did not originate inside the cheese factory, but rather was brought in with some of the added ingredients, perhaps the jalapeno peppers.

Maple Dale Cheese says that employees are now triple-checking all ingredients coming into the plant.

"Thank heavens it is a rarity, but we do live in a real world and it happened, and it is extremely unfortunate that it has happened," said Henry, from the company's office in Plainfield, in eastern Ontario. A rarity? That suggests maybe only once a week or so?

My question is what were they doing the day employees added a mouse to the cheese mix? Were they only double checking? And, let's be honest, where ever it came from, why was there a mouse in a food plant?

Yes, I know that getting rid of mice is difficult but really, BLEECH!