Ninja Slushi troubleshooting

Real answers to the problems that fill the slushie Facebook groups every week. Almost every "broken" machine is a mix problem: the Ninja Slushi needs at least 4% sugar and at most 16% alcohol, and most failures sit outside that window.

• Why won't my Ninja Slushi freeze?
  Nine times out of ten the mix is wrong, not the machine.
• What do the beeping and flashing lights on a Ninja Slushi mean?
  The Ninja Slushi uses its temperature-control LEDs to tell you which direction the mix is wrong.
• How much alcohol can I put in a Ninja Slushi?
  The machine freezes mixes up to 16% ABV on the Spiked Slush setting.
• How do I make a sugar-free slushie in a Ninja Slushi?
  Use allulose.
• Why is my slush watery or separating in the cup?
  Watery slush at the spout usually means the batch is not done, the mix is short on sugar, or you are on the wrong setting.
• How do I clean a Ninja Slushi (and keep mold out of the spout)?
  Rinse-and-run is not enough.