Babies who have too much cows milk protein are known to do explosive poos. Jovie is allergic to cows milk and even when I had a tiny amount did explosive poos that were full of mucous. Maybe lay low on cows milk for a week or two & see if they change. Sometimes they get an overload of it as babies when you drink quite a bit (Have you had a milk shake recently?? Or drank lots of cows milk at one time?). Then everytime you have a little bit of it, it builds up.