You need to confine him using a crate and an x pen. Put the crate attached to the pen as a place he can go in like a den (use a plastic crate, NOT a wire crate). Put the puppy pads inside the xpen. Leave him there. Eventually he will have to poop on the pads. I suggest a hard surface floor like the kitchen.
You can also try getting a tray or pan and putting some cedar shavings in that in the X pen along with the pads. He might fine the shavings more inviting to use than the pads.
When you take him out of the X pen to play with you, keep a leash on him so he cannot sneak off and go behind the recliner or anywhere else.
You can also try getting a tray or pan and putting some cedar shavings in that in the X pen along with the pads. He might fine the shavings more inviting to use than the pads.
When you take him out of the X pen to play with you, keep a leash on him so he cannot sneak off and go behind the recliner or anywhere else.