Unfortunately, insecticides work well at first, but over time the spittle bugs adapt and become resistant.

不幸的是，杀虫剂一开始很有效，但随着时间的推移，唾沫虫会适应并产生抗药性。

Now, reducing the population of spittle bugs, the main transmitter of the bacteria, certainly is helpful, but it's also hard to do properly.

现在，减少细菌的主要传播者唾沫虫的数量当然是有帮助的，但是也很难做好。

Meanwhile, natural predators of spittle bugs, such as ladybugs and wasps, are difficult to utilize properly after being released in an infective olive growth.

与此同时，唾沫虫的天敌，如瓢虫和黄蜂，在感染橄榄的生长过程中被释放后，很难被合理利用。