Stored Product Insects (SPI) are insect pests that infest and damage food, fibres, leathers, wood and other products in homes, shops, warehouses and other places of storage.
You may not notice these beetles except when they collect on the window sills or corners of the rooms in your house, but you will notice the tell tale flight holes and damage to wood around your home.
Booklice are small pale insects that can be difficult to get rid of and keep away because they will infest parts of your home that can be hard to treat.
Spiders rarely do damage in the garden and many are beneficial in predating on pest insects. However, some are able to bite and their webbing can be unsightly.