At-home disposal

I am relatively new to using Depends and am wondering about disposal methods. I live alone so really don't create a lot of garbage and besides, it's only picked up once per week. I wrap each diaper in a store plastic bag but the odor from the diapers accumulating in the larger garbage bag gets pretty bad after a few days. I can put the bag in the garage or outside but in the heat of the summer that just makes the problem worse. Does anyone have any ideas on how to cut down on the odor or have a better disposal idea?