Our quality Bamboo Charcoal
can last up to two years with proper care. You need to recharge it by placing
it under the sun for one to two hours monthly or whenever you feel that it's
losing its effect. This is because the bamboo charcoal works by absorbing the
smells in its porous structure so after say a few weeks or one month, the
structure may have been saturated. By leaving it under the sun, it is then able
to release whatever it absorbed previously and recharge itself. And last but
not least, winter sun is fine too as long as it's left in open air and under
the sun.