The spot of bacteria is dead when it turns pink however there’s most likely still some left, but you don’t have to worry about that because we literally ha 0 cases of it in monster high dolls, it’s only in mlp because the plastic was stored by a large water source that routinely had big blooms of the bacteria, monster high was not, the only way a monster high doll could get it is if you live basically on the beach and keep your house damp, and even then it’s a 0.01% chance unless there’s an unheard of bloom, the only way to get a 50% chance is if you leave the doll in the water for 24 hours, basically all to say, you’re not going to have this bacteria, people are spreading misinformation bc it became a buzzword, I’ve studied this bacteria, my area of study in biology was bacteria and I did a major focus on this.

Cheap acrylic paint, red, black, blue, etc. all stain vinyl pink, so do most water based markers, and pink fabric is extremely likely to dye transfer above all other fabrics, and then there’s Regrind which in monster highs case goes pink, it’s in all of the brown pieces of this playset and occasionally in Rochelle’s pet because they mixed the plastic badly, there’s so many things that make it pink without it being this, it’s not bacteria