Recently on my way to visit a cousin of mine at Saalamulla, Kollonawa I noticed mega bottles filled with water placed by the walls of most of the houses. When I inquired from my cousin, I was told that these bottles keep away the dogs and cats which otherwise come and pollute these places either by urinating or defecating.

The other day when I was walking down "Trellis Garden" in Layard’s Broadway, I saw one side of the lane lined with a mix of green and transparent mega bottles filled with water and saw cat’s feces very close to a few of these bottles. Would any reader like to comment on how the water-filled bottles can keep away the animals and the efficacy of placing these bottles to keep the place free of faecal matter of household pets like cats and dogs?