I tend to agree, just because nobody has attempted doesn't mean it won't work. People in the medical profession make millions of dollars by inventing a cap, or a way of doing something more efficiently.
I think novel ideals or approaches have potential sometimes. It's just a fair amount of testing and failure. I've got some pretty effective means of controlling spidermites and fungi, but once I started using them, the spider mites were gone, forever. I really haven't seen any since, so it's difficult to work on something, unless your at least knee deep into it.
I've had idea's for doing things like attaching cellphone buzzers to plants, because it's low frequency. If there physically attached to the plants they well could have other net benefits. But I think anything attached to the plant stalks is going to transmit both noise, and vibration, which I think might drive them away also.
The other benefit of using such an approach would be that it helps increase air movement, and perhaps increasing C02 uptake. Plants are sensitive to vibrations, and there's a lot of evidence that they are able to sense in this capacity. "feeling" their way with roots and leaves through vibrations.
It's certainly an interesting topic.
