Insects are found in all terrestrial ecosystems worldwide and are vital to the growth and maintenance of biotic communities. They are important pollinators of flowering plants, recyclers and consumers of decaying organic materials, and integral parts of the food webs that sustain both vertebrates and invertebrates. The collection of insects has several applications. The planned use of the samples dictates the collection techniques for insects. While some people collect insects as a pastime because they find them beautiful and diverse, others do it to fulfil requirements for related scientific courses. The insects are also collected by experts for research. For whatever cause, expert help is needed while gathering and preservation of insects to make sure that the samples are, as much as possible, preserved in their natural state.