People with kids, do they know you're carrying?

Pretty self explanatory, I have a 3, 2, and newborn. Do you let your kids know you carry? If so, when? My kids know there are guns in the house, and the older 2 we are teaching what to do if you find a gun, but we don't tell them we have a gun with us. Wondering if that is a Mistake because they will find out some day. via /r/CCW https://ift.tt/2LsK19D