I does not mather if the bad guano comes from Jamica or another part of the world.....bad guana is allways not eco/-friendly...even most seabird guano isn't it,
whilst it would be convenient to be able to generalize about all bat guano not being eco friendly, it is not true.
in UK there is a brand from indonesia called cavemans and not only is it harvested sustainably, it is also harvested by indigenous tribes who have been exploiting it in the same way for generations. it is even sold in the UK by Oxfam as part of their fairtrade sustainable range.
but guano users should definitely be checking their products and trying to find sustainable alternatives if necessary - and more importantly they should be applying the same standard to their daily lives too. the biggest single thing someone can do to reduce their carbon footprint is to stop eating meat - so i hope you all become vegetairians tomorrow if you truly care - i have been for 20 years
VG