I just put them into the kitchen garbage and took it out once a day. We never had any problems with smell. IF it was super stinky exploded one, I would put it in a small plastic bag and just toss it in the outside garbage right away, which was still less work than the genie IMO.
We have a diaper genie II and it works well. The refills are $5.99 7.99 and are often on sale and we go through about one a month. I will admit that it does smell sometimes. But in the 10 months we've had it, only 3 4 times. I'd buy it again. And it can also create mold or attrack those nasty little nats. We threw ours away after about 3 weeks, it was just a pain, and NASTY! We just keep a trash bag outside and after I'd change a diaper I would wrap it up in a walmart grocery sack and then put it outside in the trash bag to eliminate any smells or nats in the home!
I have the Dekor. We used it for 2 years with our DD and didn't have any diaper stink. The plastic liners are very convenient and last forever but I do think you could use your own bags if you really wanted too. I'm not sure it would work as well. think we changed the Dekor bag about twice a week and I think we only bought two boxes of plastic refills during that 2 year period and I still have one of the refills. Like some of the others said, I did end up putting some pee diapers in the regular trash too. have heard good things about the Diaper Genie too, but I just couldn't seem to get it right when I tried it at a friends house. Sam Gagner Authentic Jersey I plan on using the Dekor again and when you're done using it, it looks like a regular trash can.