oh hun I stress enough about my DS around the house and general yard, let alone out of a station. Maybe think about putting the slide locks at the tops of the windows and doors, so he cant reach them no matter what he stands on.

I will say that I have seen my brother try to dive through an electric fence (one of the orange ones, that was thread about 6 foot high, about 5 lines high) and he got tangled in it, it was horrific for me to watch, I was only about 7, my brother 8. My brother ended up with burns from it. If there is another path, chicken wire dug into the ground, a "roof" on the current fence, new locks etc, try that first. Given how small a 3 year old is, chances are he will try to slip through it.

Good luck hun, cant be easy to find a solution.