It is available in Family Pharmacy (QRS.6 only) which is locted near Al-Asmekh road befor the mosque on the main road.
It is very helpfull formula.
Integrents:
1. Qty 1 Boric Acid only with fresh production dates & sealed box only(Do not buy loose packets, it is not effective)
2. Take same Qty of Suger,Grind it in grinder (It will start looking same as Glucose).
3. Take butter 200 grams but use only as much required.

Procedue:
Use One table spoon.
Mix equal qty.of boric & grinded Suger.
If 3 t.spoons of boric is used,take 3 t.spoons of suger.
Heat the butter so that it become in liquid form.
start putting butter in the mixture until all powder is dissolved and you could make tablets from this.
Throw these tablets every where in the kitchen and wait for 15 days approx. to see the result.
Very much effective formula.(tried & Confirmed)
Safty precautions must be ensured ( If you have small children, Put the tablets in hidden areas only.

Action:
Butter smell atracts the cockroches.
Suger give them taste to eat.
Boric acid kills them effectivly.