Have you discovered pests/insects in your home?
Pests and insects can be unpleasant. Some are harmless that you can easily remove yourself (e.g. mealybugs from dry food) and others are direct pests that needs professional treatment.
If you suspect that there are pests in your apartment, immediately submit an "Inquiry to the janitor" via your login page. We'd rather take one inspection too many than one too few, so don't be afraid to report suspicions.
Be careful about buying used beds, or using beds that someone has left behind. They must also be thoroughly checked before you bring them into your apartment. The bed must possibly be frozen before it is put into use.