I've got a 3 year old that I dont want anywhere near my razor...

My GF yells at me when they are on there way to brush his teeth and I'll tell her if its safe (or tell her its not and then they will just wait a bit..)

If I shave in the morning I'll take my son for a shower.. my GF will take him out of the shower to get him drie and dressed and while they are busy I can shave without an interuption. If I shave in the evening my GF might brush his teath as I'm shaving but I keep an eye on them so I wont be startled. I dont leave my razor within reach of my son and everyting is fine..

Maybe a lock on the door could help you out.

Maarten