Seems to me that they are extra irrersponsible if they have kids and don't prep for them.
Since their kids are your grandkids can you start educating them? Start them in boy/cub/girl scouts to get them in the whole be prepared mindset or something like that.
_________________________
https://connect.garmin.com/modern/profile/eugenenine
https://pixelfed.social/i/web/profile/587437729469961861
https://www.alltrails.com/members/eugenenine/recordings