i give it to them they eat it and dons not kill them OK they don't it goes in to the earth for compost
Coffee Grounds?? - Page 3
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Most, if not all the caffeine in fresh coffee grounds leave the beans during the brewing process.
The spent grounds are an excellent source of "green" material for use in composting.
Coffee grounds are about 2% nitrogen by volume.
Yup - there's not much of anything left in coffee grounds - they aren't particularly acidic either - the brewing process strips a lot from them.