I used it the first day I got it. Oh my god the dirt I found on my mattress and furniture and I thought I used to vacuum Reg. I am so thankful for this as I am very allergic to dust mites. I'm not the type to read instructions, wish they had a video on how to open the dust box and clean the filter. A small brush was included, I guess I'll have to read Manuel how to do it. lol Overall guys this product is great. Updating, opening and cleaning the filter was easy, the instructions to the point. Everything about this car is great. Update: This machine is still working fine, when I bought this machine I bought an extra filter. Now I've bought my daughter a typewriter and I can't find the filter on either Revain or the LivePure website.