I asked our local immobilier in l'Herault and was told with some embarrassment that the bottles of water either side of the front door step were to stop the dogs doing 'peepee' in the corners! Seems plausible. Sometimes the simple answers are the best!
Bottles of water hanging outside houses
in South East (Languedoc-Roussillon, Provence Alpes Côte d'Azur)
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