Thanks everyone! I'll have them wash the trap with baking soda plus vinegar.
I really wanted to torture the rat, I found out that it ate my soap, and it chose the most expensive. Walang natira. Parang nangaasar pa e!
It looks like it passes through the bathroom window, all 3 rats were first seen in the bathroom e We'll have it screened and wired (same as screen doors) so the rat cant chew through it. I still cant figure out why the rats always pass that particular bathroom window when other windows are more accessible. I'll sprinkle some pepper on the outside windows so they can be deterred by the smell.
There's a burrow in our backyard, I am thinking of burning it and hope that none of the neighbors will complain about the smoke