If you'd like to read the study about alcohol and tea tree oil I referred to in a previous comment, it's from the British Journal of Ophthalmology in 2005 called "In vitro and in vivo killing of ocular Demode by tea tree oil." I found it in the NCBI NLM NIH US gov't website. (I tried to put the URL in but when I tried to post this it said that URL's are not permitted. )

According to the study, it looks like tea tree oil (TTO) at 50% on our eye lashes every single day is what works. I'm not sure where to find it at 50%, but as I wrote earlier, I put 100% on my scalp and had no irritation, nor on my eyebrows where I also put 100% TTO. The tiny nano brush I got from We Love Eyes should be doing something because just using our fingers won't get into the lashes as well. This morning I used the shampoo and conditioner that has TTO in it, and found it interesting that the directions say that after shampooing and massaging it into the scalp to leave it on 2-3 minutes before rinsing, and then to wash again, leaving it in again the 2-3 minutes. The conditioner had similar 2-3 minute instructions. I wonder if it's because the TTO will kill the DX after a few minutes, but they didn't know it's actually 3.7 minutes... so I left it on longer. But it's not 100%, which is what really kills it. I'm impatient and will be doing the 100% TTO on my scalp again.

I used 100% TTO inside my nose yesterday with multiple Q-tips and my nose isn't running as much as it usually does. I didn't know that DX are also in the nose and thought just on the outside. When I did it, my nose ran/flowed quite a bit and my eyes got watery and blurry, which I think were DX coming up. But I don't know. Today my nose isn't running a lot, so maybe I did something beneficial. With all the warnings to not use 100%, I'm not finding any irritation so far. But I've not put it on my eyelashes.