For slippery shoelaces that seem to come undone all the time, I’m so happy I learned Ian’s Secure Knot. It’s very strong, but still comes undone easily only if you pull on both of the lace endings at the same time. Pulling on one end won’t cause the knot to come undone. Once you’re practiced, it only takes a bit longer to tie than a regular shoelace knot.
I was working in a brand new building and the Dyson air blade hand dryers there were amazing! They were so powerful that you only had to put your hand in, have it turn on and it wiped the water off your hand as you pulled out.
I guess the awful ones haven’t been serviced like ever and aren’t strong or focused enough to do the job properly.
I stopped breathing due to formaldehyde poisioning when I was a baby. The new house we moved into (because the old one burnt down) was too air tight and all the formaldehyde in the wood wasn’t let out of the house. So I have a personal connection to there being too much formaldehyde in things and the danger.
Double knots are the worst. So hard to untie. Try Ian’s Secure Knot