I found some mouse droppings in a cabinet yesterday, I'm not very handy but best I can tell is the following -
There is a weep hole outside, which is maybe 1 centimeter wide wide, and it seems the mouse came through there, then crawled up to the pipe and squeezed through the gap around the pipe and eventually got into the cabinets. There are some holes for plumbing in the cabinets, where it has easy access to get in.
I put a very small amount of foam on the gap last night, and it looks like the mouse pushed it out, I found a few droppings again in the cabinet this morning.
What is a correct and safe way to close the gap around the gas pipe?