I was hoovering up ants at my university (where I also lived) but the ants kept multiplying. It was stressful as I had guests coming and I needed to get rid of the ants.
Dreams involving ants can represent minor annoyances or a feeling of being overwhelmed by small tasks that never seem to end. In this dream, hoovering up ants unsuccessfully suggests that you may feel like you are not able to keep up with your responsibilities or take control of a situation, despite your best efforts. The fact that you are doing this in your university, where you also live, could suggest that this feeling of overwhelm is related to your academic or personal life. Additionally, the presence of guests could represent a fear of judgment or pressure to perform well in front of others. It may be helpful to evaluate your stress levels and consider ways to better manage your responsibilities and priorities in order to regain a sense of control and reduce feelings of being overwhelmed.