The cockroach disinsection service is provided with an insecticide bait gel that is odourless and harmless for humans & pets. The product will be applied during the pest control in every wet rooms (kitchen, bathrooms) and every area liable to be infested.
The cockroaches will consume the product which is attractive for them. Then they will return to the colony. The biocide remains in their fecal matters that the other cockroach of the colony will eat and get poisoned at their turn. In that way, all the colony can be fully eradicated.
There are mainly 2 kinds of cockroach in Cambodia, the Australians (which as large) and the Germanic (which are small). The Australian ones are very easy to eradicate as they can only be found in wet area, whereas the Germanic ones are able to travel more in the whole building and can easily get hidden in unsuspected areas.
You can ask for a quotation to get a pest control in Siem Reap.