So confused. We have a small dog kiddie pool that's close to 3 feet wide and 5" high for the geese. They love it. Decided we wanted to get them something bigger so we bought a 6' wide, 2 feet deep galvanized tank. I built a small soil ramp with pavers to get into it (old ramp in the picture, they didnt much care for stacked paver steps) but they hardly use it. Prefer their $10 foot soaker. Any idea why?