My dog wont stop peeing on my presents! Help!!

Katie • Mommy to Janet Lynn Louella and Harley Marvin Jordan!🥰

I need some advice, my 5 yr old furbaby will not stop marking my christmas presents under my tree and its driving me insane. I even have a train goes around and he doesn't care he will pee on the train too. I take him out side constantly since im at home all the time due to pregnancy. Is there anything you guys suggest to make him stop??

This is the culprit