I know I asked about this before but just wanted to check how long you need to run the smartbox for? I've been doing it till the alarm goes which is about 10mins - is this long enough?

Brava recommends a MINIMUM of 10 mins (you have to turn off the alarm to run longer than 10 mins). Their orientation checklist states 1 - 3 hours is best for sportbox. I don't know if it is the same for smartbox. I faithfully cleaned mine for about 2 hours each time and never had a malfunction of any kind. I also replaced my AAA batteries every 10 days.