**3.5 Second-generation green products**

Since last few years, the major focus surrounding green products has been from a public health perspective. The demand of green products is increasing and shifting to eco-protection. Nowadays, second-generation green products are emerging. These second-generation green products will have better ingredients, greater efficacy, and less disadvantages. For example, a first-generation insecticide containing plant essential oils may have an unpleasant smell. In contrast to this, the second-generation insecticide contains different amounts of the original ingredients or other materials, which reduces the smell, while it is still being effective.
