Can I keep the sprouter in a basement or garage?
You can keep it anywhere that it has the right requirements; light at least 14 hours a day, either from grow lights or sunlight and a temperature of at least 65 degrees. If there is no heat in the basement or garage then the seed won’t grow well as it gets colder. The seed has pretty much the same requirements for growth and comfort as a human. It would not be my preference to keep it in the basement.