How can I keep the bark in my enclosures from rotting and growing all kinds of fungus. I normally wash them well and nuke them in the microwave. But I am worried that the mold and fungus might affect the spiders. Is there anything else that can be used instead of bark?

Bamboo works really well.

You can get it at you local nursery and just cut it to size to provide a perfect hide as well as climbing spaces.

So far I haven't come across any fungus/mold issues with bamboo.

On a side note - Mold can definitely be a problem to your T's, I've lost a T to fungus last year. It started out growing on the substrate and bark chips I used as a hide for the sling. I used to remove it wherever I found it, but somehow the T caught some of it and when it died it's entire abdomen was covered in a white fungus.

We kinda have the same prob, but only if the cages are to wet and moist :dry: (not with the T's dying but the fungus part)

Hey Eva, try using 'cork' bark, it doesn’t go mouldy and works very well from my experience, it is a bit pricey however. Something else that works very well is palm fronds - the cone shape tubes they make seem to work very well, just make sure they are clean and sterile.

I put some bamboo in on the weekend for my P. cambridgei. Saw this morning that there is some mold present at the base of the bamboo where it makes contact with the substrate. I'm thinking the substrate is to moist and caused the mold.

I usually glue the bark/bamboo to a rock, which then keeps it of the ground.