Should i give up???

[Murray of the Deep]

Keep your feeders in sealed bins with ventilation holes covered up with fine screening to keep out pests. Ants can't climb vaseline very well, so a ring of it around the container on the outside will discourage them or a product like Tanglefoot will also work. You can get fruit fly traps or make your own (google 'fruit fly trap').

Make sure nothing that goes in your feeder bins can be harboring pests or the eggs of pests. Clean out the cricket bin every week or more frequently if pests appear.

I cant make an effective one and I think that my fire belly toad and cane toad cant catch those flies!and also can i get sick if i try to culture fruit flies?