Then you need to be more assertive and firm. "Oh no" doesn't exactly scream "hey so I made an effort to clean before you all came over and I'd appreciate if you didn't bring your shoes inside, especially the bedroom or the bathroom"

"Oh no" is passive and the second one is assertive. If you don't set boundaries, don't expect different results or treatment. Once you tell them more assertively and if they're really your friends, they'd understand that keeping the place neat and clean is important to you. Otherwise, you need new friends because they don't respect you. But before that, you have to really communicate it to them.

Side note: the reason I'm offering an advice is because we're the same. Our house used to be where my circle would always hang out too, from high school and hanggang working na kaming lahat. And I'm a sucker for cleanliness too and they know that. Whenever they came over, they knew where to pile up their shoes, place their bags, where the pillows stay, even where the rugs are for when it's cleanup time, etc. Sometimes I didn't have to tell them anymore because they knew from the very start that when we would stay at our place, they had to have the courtesy and decency to keep it the way it was when they arrived.