Let me start by saying this little 1oz bottle is a game-changer for my Creality Ender 3. The nano-tech formula really does cling to metal surfaces - I applied it to my Z-axis screw and could immediately feel the difference in smoothness.
The non-toxic claim isn't just marketing fluff. I accidentally got some on my fingers while applying (that drip nozzle takes some practice!) and was relieved there was no chemical smell or skin irritation. Big plus for home workshops.
After two months of use, I'm impressed by how dust-resistant my printer's moving parts have become. No more gunk buildup on linear rails like with traditional grease. The lubrication lasts way longer than I expected between applications.
That said, the packaging could improve. My bottle arrived with a slightly loose cap (luckily only minor leakage). And while the drip applicator works, a needle tip would make reaching tight spots much easier - I ended up using a toothpick for precise application.
For humid environments, temper your expectations. A user reported it didn't prevent rust on their coastal workshop setup. But for standard conditions, it's fantastic preventive maintenance. My printer now runs noticeably quieter too.
At this price point, it's worth keeping a bottle in your toolkit. Just store it upright to avoid leaks!