This bachelor thesis can bring elementary informations about invasive herbs and reduction of it, especially mechanical reduction. On the other side of this task assemble a herbicide preparations for efective and right use of them. Warning users of herbicide preparations about envoromental and health risks. Collect informations about right use of personal protection equipment. People whom read it should be able to decide about a mechanical or chcemical reduction of herbs in especiall conditions. Readers should be able to understand economical and envoromental cost of reducing unwellcome plants. This bachelor thesis shows better way of reduction herbs, which are used abroad or are able to used.