For years I had problems in the laboratory with smells coming from the drains, even if they were well siphoned. I tried everything without any result, despite the intervention of the drainage company. It was enough to pour ½ teaspoon of Cielo Attivo Plus into each drain in the evening, after work, and in the morning there was no smell. I used it again after 3 days like suggested, then after 7 days. Now I pour it only once a month and there has not been any bad smell for 6 months.
I live with my family in an old apartment building, on the 2nd floor. The toilet and kitchen drains often emit nauseating smells. An acquaintance of mine suggested Cielo Active Plus Ambienti, and I must say that with only ½ teaspoon the problem was gone. Even the neighbors, almost all of them, confirmed with surprise the drastic reduction of bad smells coming from the drains, saying that some were aware of the product, so much so that they put it in kitchen waste (wet waste), in cat and dog litters and for the hygiene of the environment itself.