Our dogs are now 7 and 4, and we leave them in a chain link pen in our garage when we're gone (with a dog door to an outside run for potties), and although they no longer get treats for going in their crates at night they get a biscuit every single time we leave the house - still! And guess what? They RUN to the garage and into the pen when it's time for us to leave the house.
My dogs do the exact same thing. I've taught them that for purely selfish reasons. I'm always running late in the mornings when I leave for work. It makes life much easier when I say, "Time to go!" and everyone rushes to their spot!
I should own stock in dog treats.
Hondo Von Dopplet L Bauernhof "Hondo"- GSD
Lilie's Tug McGraw "Tug" - Golden Retriever
Maggie - Mini Dachshund (Rescue)
Lonestar Pivo - Texas Blue Lacy
Ashe - Barn Cat
Katie / APHA