There's 70 million people in the uk. Approximate lois at least three times that many rats. So there are 200 million rats only s say easily. It's probably much more than that. There have been some studies that have tried to understand how many rats are killed just in agricultural on. In orben arias and towar do they have, particularly in cities? We've looked at the disease element of it, which is huge. But what other impact do they have?