Home rat protection
It sounds like a myth. It isn't.
1
Rats swim well and can hold their breath for a few minutes.
2
They grip pipe walls to climb upward through drain lines.
3
Bathroom and balcony floor drains are the most common way in.
4
Fit sturdy metal covers — plastic ones get chewed through.
Cover drains, repair broken pipes, and make utility areas unwelcoming.