Growing cauliflower advice in Daily life

I had a couple of nice heads of cauliflower coming and all of a sudden noticed worms on them, ugh! I harvested the heads and pulled the plants out. Started cutting them into florets and keep finding more worms! Ugh, ugh. Any advice on what I can do, is it safe to eat them (am afraid there will be worms I don’t see). I put the cauliflower in hot water thinking it would pull the worms up and they would float away, didn’t happen, just ending up partially cooking the cauliflower. So disappointing because the plants were looking so good.