Put twins to nap, newly got sides off cot. Could hear them awake but sounded fine so left them. Odd scream but they aren't talking really so scream as general annoyance etx and was only a few seconds at a time. Hear banging so go in and there's poo smeared over then and their clothes. The beds. The carpet. Anything they've touched. T2 has bite marks (tiny mouth bites and fresh) under his top. I've washed them twice Inc in antibacterial wash but I'm at a loss as to what else to do. I've gone through the motions of telling t1 off for biting but how else do i stop It happening again?