Posted: 07/06/2017 at 23:38
At the end of the day, Mother Nature doesn't like a vacuum, so if we upset the balance, then she will send in more of the same plus some more as a safeguard, or send in something else that is far more virulent. In either case we end up in an even worse position then where we started.
It is often helpful to just leave Mother Nature to her own devices, or if you do want a control, then do it lightly, and also encourage other helpful things in. When I started feeding the birds, I noticed the incidence of creepy crawlies such as greenfly and blackfly in my garden reduced a lot, and found from simply sitting watching them one day that once the birds had eaten what was on the table, they started feeding on what was available in the garden. Sorted.