So I bought Hailey a kong and a Kong Stuff-It ball. I fill them with treats so that she won't be barky and such when I leave her in her crate when I'm gone. However, she won't even touch them when she's crate. Outside the crate, she goes nuts on them. What should I do? I really don't want her to be bored and/or barking while I'm away from the house.