At first I was concerned that these would not last long or that they had too little carbon in each pouch to do the job. But I was pleased to find that they removed the metallic flavor that was coming through the distiller when I didn't use the activated carbon pouches. I briefly misplaced these filter pouches during a move, so I ordered another batch. Great product!Great value for the moneyI have a “Mophorn” brand water distiller. I also got it from Amazon. I was reluctant to buy charcoal packets for it because the reviews seem to be so mixed. I went with this brand because it was affordable, but not sketchy looking like some other ones. I have no complaints so far. Each charcoal packet is individually wrapped, which might use extra plastic, but I think it contains any charcoal powder much better like that. Switching to parchment paper packets might be a better alternative, though. The setup was simple, and one packet fits perfectly in my water distiller. I do fold it in half first. I will be repurchasing this brand in the future.(Also, for anyone wondering like I was - you need charcoal for a water distiller because V.O.Cs (volatile organic compounds) pass through distillation because they are so small. MTBE, PCE, and Trihalomethane are very common ones. The charcoal catches them in the final step.)Buying something to place them in base they tear very easy.Using the Megahome water distiller, i decided to try these packets after I ran out. Maybe the water from my faucet is extra hard, but I have had to use TWO filters in my nozzle. I replace my packet(s) every month as well as clean my tank the same time every month. I had the stock and Green Piece filters before and i only need one of those. After having these they are noticeably smaller (obviously if I could put 2 in the nozzle as opposed to the 1 of the other brands). For the same price as other I will likely not get these again as I went through a "year" supply in 6 months.I got these because the chinese cat water fountain I bought didn't tell me where to get replacement filters. These don't look anything similar, but they somehow fit. They are doing the job, and I can tell by how soon the water begins to need changing.Have used before and very satisfiedI was going to use this for filtering alcohol they looked big in the pic bit they are vary small and couldn’t use them. When I rinsed them off the pouch’s split open do NOT perches this product for alcohol filteringI expected these to be bigger. I had to use 4 at a time in my water distiller. This really decreases the cost-effectiveness.Only received a a small box of 6 and paid over $70.00. I had to put 1 star because you have to put something.Fitment