The filter change depends on the usage of Violeds. For a 24/7 usage, it is recommended to change the filter once in six months.
Yes, all products that Ripple Effect deals with are tested for its efficacy against COVID-19.
Since all the products are patented, there is no competition for the products offered.
Each product has a specific area coverage. You can visit each product and page and avail the information. For more clarity, please drop us a mail at firstname.lastname@example.org