My dog is urinating and pooping in his kennel. How can I resolve this situation?

First, I would remove the water from the kennel while you’re gone, that could help with urinating in the kennel. Second, I would only include a Kong frozen with his dog food as a “treat.” I did that with one of my boys when he was young. Just take some food, soak it in a little bit of water in a bowl, then when it has absorbed some of the water up put it in the Kong and freeze it. It helps to have a couple Kongs so you always have one frozen and don’t run into a situation that you don’t have one. This is a good thing because then food becomes a training device and you can use it for other training situations as well. The treats you’re giving him may cause him to have to defecate quickly, so he has no choice but to do it in the crate. Third, get a divider that you can use to make the kennel smaller, dogs don’t like to lay in their feces so if they only have enough room to lay down then they are less likely to defecate and will hold it. Also try exercising him before putting him in the crate, that way he is tired and sleeps while you’re gone instead of wake and playing with his toys.

He's only 5 months and he was a stray before that, well that will take some time and effort to teach him new things :) Just be patient and loving. He will learn. :)