Not hard? I mean you need a dedicated bottle brush, but the bottle itself is the only thing I recall having to clean. The DrinkMate advertises itself as being able to carbonate other things (juice, flat soda, etc.), but I never carbonate anything other than water in the bottle, then add my syrups only after decanting. It prevents the bottle from getting sticky.
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Not hard? I mean you need a dedicated bottle brush, but the bottle itself is the only thing I recall having to clean. The DrinkMate advertises itself as being able to carbonate other things (juice, flat soda, etc.), but I never carbonate anything other than water in the bottle, then add my syrups only after decanting. It prevents the bottle from getting sticky.