This bat box, created by the Dutch Society for the Preservation of Nature can house 10 to 15 bats. The box is made of FSC wood, meaning that it is made of wood sourced from sustainably managed forests. Bats are protected animals and you are doing a good deed by offering them a nest box. Hang the box at a height of 3 to 4 meters and make sure that the bats have an unobstructed fly route into the box (without being hindered by trees, branches or buildings).CJ Wildbird Foods was founded in 1987 and has grown rapidly ever since. Most of the products are manufactured at the company s factories or production facilities in the UK, Netherlands, Lithuania or China. The products are innovative and comply with the highest quality standards. CJ Wildbird Foods collaborates closely with the Netherlands Society for the Protection of Birds (Vogelbescherming) so many items show its logo. All products have been tested on safety, effectiveness and sustainability.