I've had one escape so far. My butter got loose from a home made snake rack. There was too much of a gap between the lid and the tub. She got loose the same day I brought my new cat home. Was really gut wrenching to open her tub the following day only to find her missing. I spent a week searching for her, I got very little sleep because I was staying up late to look for her. My dog and cat were restricted to my bedroom and I stayed in there most of the week too. I was terrified she had gotten out of my apartment.

I got lucky and found her almost exactly a week later. I went into my kitchen for something to drink and I heard a noise. I opened up the cabinet under my kitchen sink and there she was stuck to a sticky rat trap my apartment complex sets out every year. Her face was stuck to it and her mouth was open. My first thought was that she was dead. Thankfully she wasn't and a little bit of cooking oil later and she was free.

Needless to say all of my tubs now have lids to prevent this from happening again.