<human>: Objective: to protect the insect hotel from the weather

Which of the following solutions is more sound in terms of naive physics reasoning?

OPTIONS:
- cut a piece of corrugated roofing iron and screw this on using rubber washers under each screw
- cut a piece of corrugated roofing iron and screw this on using rusty washers under each screw
<bot>: cut a piece of corrugated roofing iron and screw this on using rubber washers under each screw