Have a bunch of coco that is infested with RT. I was using the Bayer product until I found a study which just used hot water. That is all I use now and it works great for me. Real simple, fast and easy! I do not have a link , but here is the info you would need to look it up as well as a bit of a summary :
"Phylloxera in Oregon Grape Vines: Biology and Treatment of
Planting Stock With Hot Water Dips
Bernadine Strik and Paula Stonerod
Associate Professor and Research Aide, Dept. of Horticulture
Oregon State University"
The objectives of this study are to determine methods for dipping of young grape vine nursery stock that
will eradicate existing phylloxera populations without causing plant damage.
/all life stages of phylloxera were subjected to hot water dips in 125*F water
for 0, 3, 5, 7, 9, 11, and 13 minutes to determine potential for eradication.
The results
showed that all life stages were killed with a 5 minute dip in 125F water.
I found that tap water and a thermometer were all I needed to be rid of them . Hope it works out as well for you .
Phylloxera are not thrips. They are related to root aphids. However, you are correct about the hot water "trick". Water heated to 120 degrees F will kill most pests,while leaving the plant undamaged. This works against broad mites, russet mites, I'm guessing spider mites,although I haven't researched it, and many other pests. If your plants are large, it becomes more of a logistical problem to find a container large enough to dip the plant. You only dip the plant, not container/medium. 10 or 15 minutes in 120 degrees temperatures will kill most small pests. Not sure if this works only in water, or whether it will work by raising grow room temps to that level. Seems likely that this would work, but haven't tried it. But for cuts, clones, small plants, dipping in hot water is the way to go.