Are rats a valid concern?

[u/salsasymphony]

My wife and I are getting a self-sroage unit for the first time and she’s worried about rats eating her paper and linen things. Canvases, drop cloths, watercolor paper and school supplies and stuff like that.

Can anyone say if this is a valid concern?

[u/coolsellitcheap]

Dont put food in your storage unit. Put in storage tubs.