Killing animals

I remember reading that more than 90% of Cambodians believe in Theravada Buddhism. Is this number correct?

If so, then comes the question about killing. If I remember correctly, Buddists do not believe in killing, since that prematurely ends the life of another, who is hoping to find the peace of Nirvana through reincarnation.

Ie. will we be able to buy and eat meat in Cambodia? If there are no butchers, perhaps there would be no meat?

What will people think of us, if we were to kill a rat, or swat a mosquito, or spray inseciticide around the house?