There are many ways to keep a ladder from slipping. The easiest “put on” her old sneakers or shoes with a rubber sole.
Recommend to read
INSTEAD OF THE JACK
To lift the car body, for example to change wheels, no problem, if there is at hand the Jack, though this procedure and you will need to spend some time. And in the conditions of garage...
THE SECRET PROFESSION OF “DIPLOMATS”
"Three potatoes, two beets, a kilo of carrots, two heads of cabbage"—a tongue Twister rattled off the seller standing in front of me a slender youth. I looked doubtfully at him, mentally...