The Smoking Flower Pot

I quit smoking over seven years ago, and since then, I have not let Junior smoke in the house. He has to go outside to light up. When we lived at the house, I had a flower pot on the porch that he threw his butts in. Here at the apartment, he just throws them where ever he happens to be standing. Most go into the yard, but some end up on our front porch. It drives me crazy, because they leave black marks on the concrete, and it gets tracked into the house and onto the carpet. If he keeps this up, I am going to need to get some concrete cleaner to keep the porch clean. The worst thing is that the flower pot from the house is on the porch here, but I just can't get him to use it. Drives me crazy!