[Chicklette]

Here is a trick. Get a box, a stick and string. Hold the box up with the stick, tie the string onto the stick so you can pull the box down. The box will be on an angle (the stick holds up the box) and you have to hide so your gray can’t see you so the string has to be long enough for you to pull it far away. Put a trail of the favorite treats and snack leading into the box. When they gray goes in the box pull the string so the box shuts.

It may work it may not but it’s a shot at least. Hopefully the gray will go into the box. It’s a silly idea but had to post it.