I know the title will be a little confusing but hear me out. In my attempt to get the mediocre ending I noticed that out of ALL of my runs I always got 1 of the animatronics. Even though, I have not bought a single thing and have threw out every single one. I'm aware they can trojan horse their way in, but again, I have not bought a single thing. So my question is, are you guaranteed 1 annoying scrap of metal every save?

You could buy the sanitation station at the very beginning that helped me.

If you have any risk at all, there's a chance they can get in

What Supra said. I also think you need a certain H&S score to stop any spawns. Not sure tho

Well I cant buy anything thats the problem