Spider Mites on Catesetum

[Cymbaline]

A few days ago I posted a question about my Catesetum Monnierara Millennium Magic 'Witchcraft' leaves turning splotchy yellow.
Monnierara Millennium Magic 'Witchcraft'

Turns out it has Spider Mites. I noticed some webbing and tiny red bugs and the back of the leaves are now white and splotchy. It wasn't like this when I first posted.

Anyways I hope I caught it in time. I took it into my bathroom and washed the leaves off with water and wiped the leaves with a cotton pad. The cotton pad took off some yellowish film.

I can post a picture if interested but since I washed the leaves off and wiped it down it looks better.


I found a post here on the boards about using 70% Isopropyl Alcohol every 2-3 days for any attack and to treat the other plants.
Spider mites on Catasetum

I don't want to go overboard with my orchids so I'm asking here first. I want to buy some Isopropyl Alcohol to spray my current plants and in case these spider mites come back on my Catesetum.
I'm guessing Do people use the stuff full strength and it doesn't hurt any plants?

Is it a good preventative measure or is it overboard?

I have the plant in a room that gets 50+ % humidity and I often run a ceiling fan. I'm going to re-arrange my plants so the Catesetum gets more air flow .