oh yes we have tried no diaper at sleep and I've gone in at 2 am to take her pee , the potty is right beside her bed and she is just laying in her own pee fast asleep. apparently one either has the chemical to wake up you to pee or you don't. my hubby and i were bot wetters so i don't see her being dry for a while still and having DCK's in the am doesn't allow for bath and sheet chaining and laundry and all that....Thank you for your suggestion though it would make sense.