Everybody who considered getting a Ketonix, which sells at over £100.- in the UK, I would personally not bother.
After watching a video by the amazing GingerlyGinger on Youtube, I considered getting a breathalzyer and she was right - these things work! So if you have considered getting a Ketonix, let me be honest: don't waste your money.
GingerlyGinger has made two videos, one of them (the older one) is a bit hard to understand so she made a new one only a week ago. Give them a watch, they're very informative:
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