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I go to my local pharmacy and ask for medicine-grade screw-top bottles. These have good seals and only cost pennies. To be doubly sure I place the bottle in a plastic bag and carry it in an outsi...
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I go to my local pharmacy and ask for medicine-grade screw-top bottles. These have good seals and only cost pennies. To be doubly sure I place the bottle in a plastic bag and carry it in an outsi...