Well, I seriously doubt they are eating your mangoes

We travel a lot, and everywhere we go, there is a serious labor shortage, especially in places like hotel housekeeping. People just won't take those jobs anymore.
So those gals are doing double the work. They don't have TIME to taste your fruit.
We ALWAYS do one of two things, sometimes both -
1. Upon checkin, we say we do NOT need any housekeeping. If we run out of towels or toilet paper we go to the front desk. Many places we have traveled lately (mostly West coast) have instituted a "housekeeping will not enter rooms" policy. We get a basket to set outside the door with dirty towels and empty tp rolls and they swap them out in the hallways.
2. The "Do Not Disturb" sign is permanently hanging on our door. Avoids questions like "why is your room full of trees?" etc.
Cheers, Carolyn