This is very effective, but I use it sparingly because I hate throwing the empty cartridges in the trash. We just don't need more plastic waste, and it would seem that these cartridges could be easily refilled. I'd happily pay for bulk refill liquid and whatever refill apparatus if any is required. From me personally, your revenues would increase (I'd use it much more often) and your company would get some well justified environmental cred.
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