Reddit reviews Safety 1st Adjustable Multi-Purpose Strap Pack of 6 Staps

Well, if there's any way to keep a cabinet that's ok for him to get into (or two) I'd start there so you have somewhere to redirect him to that appears identical. Beyond that (and yours sounds much more physical than ours) we've had the best luck with the strap kind that sticks on to the front of the door. We tighten the strap enough that the doors don't move and she can't get any real leverage to pull them off. These did not work on painted cabinets for us but have worked great on wood. She has managed to pull the strap out of one a couple times but that was easily fixable without needing replacing.

We use these on things that we don't want to open. Safety 1st Adjustable Multi-Purpose Strap Pack of 6 Staps https://www.amazon.com/dp/B008BVY9CK/ref=cm_sw_r_cp_apa_hUmqzbSXAFFRF