Make the nappy change process as smooth as it can be, certainly easier than individually bagging each nappy to keep your house from stinking, bin seems to hold about 40 newborn size nappies before it needs emptying and you'll get 2 or 3 bin fulls out of each of these refills.
We like this nappy disposal, locks in the stink, so it's always next to the change table in the bedroom, rarely smells, and if does, it means we have to empty it. These replacement refills were price cheap, was even cheaper than Costco so it was a bargain. This is the genuine stuff, so fitting wasn't an issue!
We use these refills all the time. I think they make life a lot easier especially when you have lots of nappies to change (we have twins). This product is good at locking in the odour and very easy to change.