Greetings: This product requires four C Type batteries which are not provided. I purchased ours from Amazon. We placed one unit in each of our two refrigerators, on the top shelves, with the top louvers clear of any obstacles just a few days ago. We noticed the improvement in the oder control within a few ours. We are still waiting to determine the effects of the ozone on the reasonable preservation of food and produce in our Refrigerators. Based on our preliminary observations, we expect a marked improvement in the prolongation of the life of produce as well as stored food (i.e., previously, cooked food). Accordingly, our 5 star rating is based on our preliminary observations.
The unit is okay. It does NOT compare to the Ecoquest/company that bought out ecoquest. I bought it for to ozone function. It claims to be able to conquer 4000sq ft. I find that hard to believe. It doesn't even clear a 2 bdrm apartment after an entire afternoon.
I'm going to inquire about a refund on Monday.
From cleaning produce to sanitizing my water bottle lids and attachments! My favorite house hold cleaning device if you will.