I would kill the 4th rat owing to following reasons
As for the 1st and 3rd rats,since certificates are often enclosed by lamination,
Then their teeth could not be sharp enough to deform any of my certificate
As for 2nd and 5th rats¥because rats prefer protein-rich foods
And since ATM card and Visa do not contain essential minerals or any survival benefit
Therefore,ATM and Visa cards,would not constitute their diet,
As for 6th rat,Bible is merely collection fables,myths,and fictitious characters,hence it has no significant effect in modernized world
Thus why house ownership documents are so vital,because documents can be easily destroyed