Starter problem

Oh my!  I had completely forgot, DH and I will be leaving Friday early (for his 50th high school reunion in Austin, Tx), and will return home Sunday pm.  Friday will be day 9 for my two starters.  I feed one of them each morning and the other morning and evening per their directions.  I'm sure everyone else knows this, but do I stick them in the fridge, or do I need to take them to a babysitter?