Awesome product
This is a very good suction. I tried lots of different suction before but i think this is the best. I am only using for 2 days now so will see how long it last. The only thing is that you can turn the suction off right away it just jumps to different speeds. The cotton filter i found not a bad idea so the liquid mucus won't go inside the machine itself. I used a different machine before which had no filter but the liquid would get inside anyway and i ended up using air pump to dry it which was a  hassle.
Rating: 5 stars