my Little Bill at 3 months ate both ends of a rubber bone, luckerly for him he had chewed it into small pieces, showed up 9 hours later in his p, but kept coming for the next 48 hours, little but often,I did watch him closely.
My other cocker george then 3 is worst, last year ate 6 wafer bars,, wrapper as well, was made sick at the vets within a hour of eating them, some wrapper still got into his system and came through 36 hours later.
Hope your little man is ok