There is a rule that the kids can only play with Play-Doh, and Slime outside. They can go on the patio, on the patio table, but NOT in the house. The Slime was added to the rule, when the 8 year old was bouncing it on my walls, and it left splotches that had to be cleaned. At times, my daughter thought I was a bit unreasonable about this rule. After all, it only happened once, it was cleaned up, and my grandson knows not to bounce it on the walls now.
The youngest granddaughter, got some slime for Christmas. Her mother opened the container, squished it a minute, then put it back in the container, and put it up, to be played with outside, at a later time. She did not know there was a 6 pack of the stuff. My youngest granddaughter knew. She got the rest out, and was playing with it, tossing it in the air, and catching it. No one knew she had it, or was playing with it. I walked into the play area, and almost fainted. She had tossed it up, and into the ceiling fan. The fan flung slime everywhere. I screamed for her mother to come clean it up.
My daughter may have gotten out of helping me clean the house, and get it ready for Christmas. She may have gotten out of helping me cook Christmas dinner. She may have gotten out of helping clean up after Christmas dinner. BUT by golly, she had to clean every square inch of my walls in the play area, the ceiling fan, and a few of the toys in there. Suddenly, my unreasonable rule about that kind of stuff having to be played with outside, isn't tough enough. The new rule, according to her, is that there will be NO SLIME anywhere on the property, ever.