My boy has been pad trained and has never ever peed of pad, never marked, matter of fact he is trained so well on pad , he holds it sometimes to poop after we come in from a walk and goes on his pad, even though he sees my female pooping outside
My Female on the other hand sometimes cant hold it at night, and i cant get her to go on a pad. She is very sneaky about it
My boy was neuterd a little before 6 mo.