There are funny little flies in some of my T tanks. I have no idea how they got there I take out left over crickets after feeding. I got a brick at the pet store.
How do I get rid of them? Is it a big problem?

Im pretty sure they are just fruit flies... but be careful, they lay eggs that turn into maggots (don't know if they will consume T flesh though). Try and put a fine mesh over the air holes but make sure the cage is still well-ventilated. Good luck!

BP

If its the same as in some of my tanks, then its called "miggies". They lay there eggs in the peat and they are harmless. You probably got them along with your peat brick.

Remove the T and place the tank in the sun to dry for two days. You may then want to bake the peat at I'd say @ 120 for half an hour or so to kill off any eggs in the peat for future.

I have read they are called scuttle flies (Diptera). They rather walk or run in the cage instead of flying. I had them the other day in one of my enclosures. I always 'nuke' my substrate, pieces of wood, etc that can become a problem before putting it in the enclosure. But when they do appear I take everything out and put in new substrate, etc. Rather that than some infested enclosure. Hope it helps a bit.

I would just replace the substrate and wash any features you might have...

I once had a bad fungal infestation in one my of P fasciata sling containers and I thought I'd try heating the peat or actually the whole container and afterwards I put it in the fridge for an hour. Then after getting the container back to around 25 degrees I misted and reintroduced the sling. It died the next day and I don't know why! So my lesson is just to provide new uninfected peat, however this costs money... But can save you alot of frustration.

Although I add that this fasciata sling may have had some mould in his body before I took the sterilizing step... But he did look fine when I took him out. I'm not sure.