I love using these with my nappy bin, they are strong and smell nice. The cartridge is quick and simple to fit in the nappy bin. They stack nicely so easy to store.
The down side to these is the price. They are very expensive to buy both individually and in bulk and I feel you waste a lot of the bag when using them. I have resorted to normal bin bags in my nappy bin due to not being able to afford the price of these.