Wife and I had been married about six months. We lived in a rented doublewide. Wife was (and is) deathly afraid of mice. If she had seen a mouse in the house she probably would have never been comfortable there again.
Steel wool was stuffed in all the gaps around the plumbing pipe penetrations in the floor when we moved in. Wife decided the steel wool was unsightly even though it was in the sink base cabinets so she removed it unbeknownst to me.
I came home after work one evening and saw a mouse run across the kitchen floor about 6” in front of her. She didn’t see it. She was just about to start dinner. I was able to talk her into a surprise dinner out. While she went to the bedroom to change clothes, I had time to set a couple mouse traps in the kitchen sink base since that’s where we kept them. Doing that, I saw the steel wool had been removed from around the sink drain but no time to do anything about it.
When we got back from dinner, she went to take a shower before bed. One trap had a mouse so I tossed the dead mouse out the front door. Didn’t have any steel wool but had SOS pads, which were immediately stuffed in the gaps around the pipes in the kitchen and hall bath. When it was my turn to shower, the SOS pads in my pocket took care of the pipes in the master bath.
Later that night, told her I was getting a dishrag out from under the kitchen sink and noticed the steel wool was missing from around the pipes so I’d replaced with SOS pads since that’s all we had and we needed to keep mice out. She had no idea that’s why it was there. She also had no clue a mouse had run across the floor right in front of her, and knew nothing about a dead mouse from under the sink rotting away in the front yard. 35 years later she still knows nothing about it other than if you find steel wool stuffed in a crack in the house somewhere it doesn’t make sense, ask before removing it.