Think of your kitchen. The countertops. The space on the countertop where the appliances are lined up (Microwave, Toaster, Coffee Maker, Mixer, etc.) They all are so cozy and squeezed next to each other. When you clean, you wipe right under the edge of each so all crumbs are out of sight (out of mind).
Now you spill a large glass of red kool-aid onto the counter and it seeps underneath each of these items. If it were water, you would just put a towel to the edges and let the rest dry up on its own. But even after a couple seconds exposure, it will take bleach to rid your (rented) counters of the red stains.
The next hour is spent meticulously cleaning the places you didn't plan to clean until you moved out. What was supposed to be a quick drink break during your movie ends up being an entire intermission with a side of a workout.
You know that when you look back on this it will be funny someday. That day is not today.