Hydra in My Household Dust

This video shows the dust which collected on my black tray over the period of 2 days. The amount of hydrae in the dust was shocking. During 2022 - 2023 I would occasionally see a hydrae, or two while using the microscope but the amount I'm seeing now is shocking.
I believe the tiny yellow balls are hydra eggs.
Hydra are supposed to live in water, but I have found them in my household dust, spider webs, the soil, on tree bark, rock particles, the dust collected on the tray after leaving it outside for 2 days, and the dust I collected from the air vents in my brother's truck. My brother lives 2 hours (100 miles) from where I live. None of the things or places I just listed are in water so these hydra are obviously not where they belong.
Hydra are immortal and are a main focus in stem cell research.
Hydra fully regenerate when damaged so if 1 hydra is cut into 2 pieces, both halves will regenerate and become 2 hydrae.