Get the lockable type----
Get the lockable type that locks from the inside but can be unlocked from the outside with a small "tool" that comes with the knob. There will be a small hole in the outside knob that you insert the "tool" in to unlock the door from the outside. Hide the tool from the four year old, fact of DON'T even let the four year old know about it.
Sid, Lois & HRH MISSY Terrible 2s SHIH TZU
2011 ROCKWOOD 8285 WS
2014 F-250 KING RANCH PS/SD/6R140/BFT
BOLIY PRO 3600SI GEN
DAYS CAMPED 2016 57 DAYS