Guarding the guards

All house is guarded 24 hours a day. One should therefore feel very safe. However, one evening I returned and found one of the guards in the process of stealing diesel from the barrel next to our generator. His explanation of our gardener having instructed him did not persuade me at all, and I sent him to hell while he fled with his cloth, a big bottle of diesel under the arm in the uniform of the company to never be seen again. A few days later, I was approached by another guard, he told me that I should better lock our garage gate inside the compound day and night, as the spare wheel on our car would definitely be worth 30’000TzSh on the black market in Kariakoo. So one ends of guarding ones own guards instead of being guarded by them…