My baby had a blowout into his rear-facing infant car seat (Peg Perego Viaggio). If this has happened to you, have you dismantled the whole car seat and washed it all, or just spot cleaned? He is 10 weeks old and EBF, so its BF poo. If you went through this, what did you use to wash? I've rented to car seat so I can't risk discolouring the fabric or damaging it in any way.
Advice?