If I buy it now,how to ensure the unit is free from covid19? Next question,is it safe if I let it switched on 24hrs non-off?
March 5 2020
I didnt realize it came from out of country, but I was told that shipping from China there would be no difficulty because of how long it takes to ship. but other thing I got from China I cleaned with alcohol.
Other question: no you cannot leave it on for 24 hours. It says it is good for 4 hours, but water seems to last a bit longer. I really do like it, but I am using it close to me , not for a large room.