This new contact herbicide acts by penetrating and scorching the leaves of unwanted weed species with results being evident in hours. Particularly effective against young and seedling weeds in seedbeds but it's non selective so valuable plants should be shielded. Contains pelagonic acid, a naturally occuring fatty acid which is non residual and breaksdown rapidly in soil.. Particularly effective at removing weed seedlings in seedbeds before your sowings have emerged. Works best applied on warm sunny days.