It's a creature watching over you in silence, but you avoid

To take advantage of their role as natural insect hunters:

Do not chase them away systematically: They usually do not stay in the same place for long.
Reduce exterior lighting: The lights attract insects and, by extension, geckos. If you mind, limit unnecessary bright spots.
Keep an environment clean: This helps to avoid excessive proliferation of insects, which could attract more geckos.
A necessary revaluation

Geckos are not your enemies, but valuable allies in your daily fight against pests. The next time you come across one, instead of the hunter, consider him a discreet keeper of your house.