Fertilizer Cloth - BIOPON Leaf Wipe Pack of 15 pcs. Handkerchief for caring for ornamental plant leaves. It cleans, shines, cares for and reduces dust build-up. The cloth is soaked in a special liquid that cleans and fertilizes the leaves and leaves them shiny for a long time. Recommendations: Clean only the top of the leaf! We only clean the thickened leaves. covered with a waxy coating. Use every 2-3 weeks.