The smock mill Goliath in front of the wind farm Growind in Eemshaven in the Netherlands. A windmill is a mill that converts the energy of wind into rotational energy by means of vanes called sails or blades. Centuries ago, windmills usually were used to mill grain (gristmills), pump water (windpumps), or both.
When bat guano is harvested, it is in a powdered form. Plants that can benefit from the use of bat guano fertilizer include vegetables, herbs, ornamentals, and fruit and nut trees.
Is Bat Guano Dangerous? The Hidden Danger of Bat Guano. Ask nearly anyone, and youâll hear that bats (although beneficial in insect control) can be dangerous because they carry rabies. But a lesser known danger, and one that is not as easy to avoid, is histoplasmosis, a disease you can get from exposure to bat guano (bat droppings).