Bug hotels are a great way to attract beneficial insects to your garden. Also known as insect hotels or insect houses, they are structures filled with different kinds of natural materials – dead wood, stones and straw, for example – providing shelter and nesting facilities to all kinds of insects. Following a 2017 study predicting a dramatic decline in insect numbers, Laura Breitkreuz, an insect expert from the German Nature and Biodiversity Conservation Union (NABU), welcomes the fact that more and more people are putting up bug hotels at home. However, she cautions against buying a poorly bu…