with us this refill cartridges fit well! Take this for about 1 year! Never processing was previously incorrectly and it really reduces the "request harassment" when in the "plastic tube" wraps the diaper. They are quite expensive, but after we had not used them by 2 weeks we had ever "diaper smell" in the nose (and we regularly bring out the garbage !! >> So are not hoarders or so :-)) So, for all with sensitive nose !! >> Recommended, but expensive