It can have hot spots in it and can burn their mouth even if you shake it, we use a bottle Warmer and it works great

You shouldn't shake it b/c that breaks up the protein in the milk.You should lightly swirl it.

People are always gonna have something to say about the way someone does something. It's your baby, do what you feel is best!

I always check it before I feed him ..thats the way Ive always done it so Im not changing now!!! @mommacat

I understand that but I always shake it up real well. just like when you hear up food, you always stir it halfway to make sure it heats evenly @caydensmommy ladies were bashing me on Facebook and I couldn't understand why?

I think it's just because the microwave can make it overheat really fast.

there's a big debate on bottle warmers vs. microwaves. it even says so on my cans of formula. but even if a half hour goes by the bottle gets cooled down and I'll heat it up again a little bit. my son hasn't gotten sick or anything from it so it's not harming him any @rhia

They say not to because the microwave can cause hot spots and burn your baby's mouth.

I always use it to heat the water. I haven't heard anything saying not to....