Passover: Burning Chametz: Husband Covered by Wife

It is preferable for a husband to say kol chamira.  However, he is covered by his wife's saying kol chamira, as long as he has asked his wife to do so.
Note If the wife burns the chametz, she should inform her husband at the time she actually burns the chametz (she may inform him by phone and does not have to do so in person).