MartinOC
Insert something suitably witty here
Just brew with it. FFSGiardia. See without even knowing that how does it get into your mums tank water? Like I mentioned its surprising how many dog chewed bones I've removed from my gutters thanks to Crows. I sometimes here them rolling down the roof into the gutters after Crows have lost their interest in them. The odd road kill too, small skeletons. Gut parasites! I wont take that risk. Even if i was desperate there is that haunting thought in the back of my mind. Along with all the decomposed possum turds and bird shit etc... Probably all nothing to worry about though.
It can only add to the flavour.......