It’s only 5 mos old. I use it every day. I’ve been cleaning it with a pad with a soft abrasive surface that’s meant to be gentle on teflon. It’s really hard to get it clean now. When I think I’ve finally cleaned it, once it dries, I still see stuff caked on it. I thought in was just the plastic at first but was able to scrape off the stuff with my nail. So I used something stronger, not as rough as a brillo pad, but one of those rounded wire things, lots of soap, and now the entire jar has a film on it, like a glass that’s become etched. Is there a remedy for this? BTW, it’s even been difficult to get the green smoothie residue off of the rubber lid, having to clean it over and over. what’s going on with this?