This is how Mom is trying to lure Cody into the PTU. She has a line of Temptations leading to the PTU.
And a pile inside. After Cody eats the first pile halfway in, she scatters more in all the way around - even in the back.
stick his head into the PTU while Mom is sitting beside him, but he won't go in further than that while she is there yet. She is leaving the treats in the PTU so he will go in while she isn't there. Infortunately, she has to contend with us Tonks getting into the PTU also - after all, we do love it in there.