On instructables.com, someone posted instructions on how to refill the cartridges. The manufactured ones only need a hole with a plug to do this. Here's the link;
http://www.instructables.com/id/How-to-refill-a-disposable-Brita-brand-water-pit/
In reply to: "Clorox on Brita cartridge recycling: Not so easy"
June 24, 2008
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