If you're going to keep plants like flytraps you need to feed them clean water - either distilled water (can get this pretty cheap from shops like Halfords) or start collecting rainwater.
I'm not sure if Brita filter water would do the trick, depends how effective it is at removing the solids in the water but certanly boiling water isn't good enough, although collecting the steam would be if you can figure out how!
Normal tapwater will kill them off though, so either way definitely don't use that! They prefer to sit in peat and definitely don't like fertiliser although I hear you can get away with compost but it's not quite so recommended. The alternative is to just sit them in sphagnum moss which you can get at garden centres pretty cheap. Some people recommend using sand and perlite in with the peat but I don't bother with that shit and my flytraps are perfectly healthy. Growing them from seed isn't easy, I've not had that much success yet so it's easier to buy them, either online or at a garden centre (or B&Q). If anyone really is interested in trying flytraps then I'll post more info on keeping them healthy and alive.
The only reason I started bothering with carnivorous plants is because I get sick of insects pestering me in the summer but I absolutely do need the window open because it gets far too hot in here, insecticutors are an alternative but they can be messy, use electricity and so on so I picked the green option!
