I put a bell by the front door so my German Shepherd wouldn't scratch the door to go out. Works like a charm - except - when he wants to go outside & play ball with me, he rings the bells & won't stop. I created a monster. So, whenever he rings the bells - he goes out. Without me.

Sigh - be careful what you wish (train!) for!

All GREAT ideas on your new foster! Wow - we're very savvy women, aren't we?