Last summer I had a customer whose kids spilled a 1 gallon container of slime in their closet. She asked me if I could get it out. It had dried into a 2' diameter pancake. I told her I would try but couldn't make any promises. I threw everything I had at that crap. Gel-spotter, solvents, WD-40, Heat, steam, and swear words. Nothing was getting it out. After about 30 solid minutes I gave up. That was the first time for me giving up on slime. In the past, and since, I've always been able to work it out, but in this case, it was just too much. I told her cutting out the carpet would be a better option. It would have taken me hours to get it out. The lady was visibly upset at my godless abilities, but I wasn't going to spend all day working on that dried cow patty.
Then there is
@Bob Pruitt with his grandkids videos of how to make glitter slime. Bob Bob Bob. We need to talk about this. My kids love that channel.