Some species are significant pests of dry plant produce, such as seeds and cereals.

In some areas of the world it is a significant pest which affects the agricultural economy.

It is considered a significant pest of horticultural ash.

Potoroos were formerly very common, and early settlers reported them as being a significant pest to their crops.

When they group in large numbers, they can become significant pests.

Although the larvae live in the soil, feeding on the roots of host plants, they are not significant pests.

It is abundant in lawns, but is not considered to be a significant pest.

The latter can be significant pests to pepper growers.

The species can be an economically significant pest in forest nurseries.

Several species are economically significant pests, some of them invasive.