Not had to deal with 'Turkish' Silverfish yet, but here in the UK i used to use Lavender Essential oil (Any Citrus oil will suffice if you don't like Lavender smell). Dilute with some warm water, Shake bottle well and spray in ALL areas, especially the damp dark places, like under the sink bath, etc and also spray around the edges of all your rooms. This won't kill them, but they don't like the smell (Allegedly ).
There are plenty of KILLER stuff, but these are not a Natural substance and ultimately involve chemicals. Personally i want to kill the little buggers, not keep them away. I use the Chemical Spray.
However if you google 'How to kill Silverfish', there are plenty of hits for you to read.