I have chihuahuas (don't ever get males) and let me tell you they are hard to train...they did their business on the hallway baseboard...I tried everything, washing my floors every day, wiping everything down with bleach, spent a fortune on air freshners...you guessed it..I sprinkled baking soda on the woodwork (it's still there after 3 days) and asked my children (3 young adults who would always complain,,,Mom, that smell!!)..it's gone (I even got down on my knees to put my nose to the baseboard)...I leave it there as long as I don't have company. I always lock my male dogs away when no one can keep an eye on them...hope this helps someone else...