I bought the Oskar and I'm sorry to say that it doesn't get much more unhygienic than this. I don't want to advertise other products. But the Oskar and its stinky and extremely expensive filters go down the drain after 2 weeks. 90.- for the cat but better than breeding bacilli!

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Accepted Answer

I understand your concern. My tip: only fill the water level so that the water is used up after one night. This way the filters are not always bathing in the water. Otherwise, simply empty the water after use. This way the filters will only turn "brown" after about 2 months.

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Question about Stadler Form Evaporator cassettes

I bought the Oskar and I'm sorry to say that it doesn't get much more unhygienic than this. I don't want to advertise other products. But the Oskar and its stinky and extremely expensive filters go down the drain after 2 weeks. 90.- for the cat but better than breeding bacilli!