Your best bet is to attack the source, that being said, what a big source that is to tackle...
I had a white fly infestation around my hoose, and when I really looked into it, I noticed there was a huge colony on my large/dense olive tree. This presented a huge problem also. Now, I cannot say which would be easier to get rid of, white flies or thrips, but for my situation, I was not able to totally get rid of the pests in the olive tree, but I was able to control it.
I just got a concentrated spray that connects to your hose from the big hardware stores, and sprayed the whole tree as best I could. It took a few treatments, but I can hardly find any infestation anymore. This has lessened instances of white flies on my surrounding plants.
That is the best I can give you...
Natural bug hunters like the lacewing larva and mantises are great, but are hard to keep localized. If you do try natural, DO IT FIRST. spray after as a lot of beneficial bugs are very susceptible to chemical sprays. Ladybugs even more so.
I had a white fly infestation around my hoose, and when I really looked into it, I noticed there was a huge colony on my large/dense olive tree. This presented a huge problem also. Now, I cannot say which would be easier to get rid of, white flies or thrips, but for my situation, I was not able to totally get rid of the pests in the olive tree, but I was able to control it.
I just got a concentrated spray that connects to your hose from the big hardware stores, and sprayed the whole tree as best I could. It took a few treatments, but I can hardly find any infestation anymore. This has lessened instances of white flies on my surrounding plants.
That is the best I can give you...
Natural bug hunters like the lacewing larva and mantises are great, but are hard to keep localized. If you do try natural, DO IT FIRST. spray after as a lot of beneficial bugs are very susceptible to chemical sprays. Ladybugs even more so.