For those who have or have had female cats - when you spayed them, did you find that they stopped peeing indiscriminately?

I have three 2-year-old females. Two of them, when they are in heat (they are indoor-only cats), pee all over our apartment. We have a neutered male, so I figure either they are competing for him, or they confuse the sensations “down there”. I am trying to figure out if anyone else has had this problem, and if when they spayed the cat, the cat stopped this behavior.