I keep them under the sink, next to the dishwasher. Just got a call from a guest asking where to look for it. Have gotten comments in the reviews about not providing these at least once. Clearly, this is not a logical spot for it.
@Inna22 we keep ours in a pretty dish that lives on the microwave above the dishwasher. Gusts have never not found them so 'in plain sight' seems to work better than in a cupboard (where 99% of people keep them)