Johnsons Lawn Seed Tuffgrass 20sqm/425g Tuffgrass with Dog Patch Resistance is a unique product that has been formulated to banish the problem of yellow patches and dead areas of grass caused by dogs urinating on lawns By incorporating naturally tolerant grass species, scorched patches in lawns will be consigned to history, without consumers having to change their dog's diet or behaviour Even if slight discolouration occasionally occur, grass will recover Due to geographical locations we are unable to deliver to: Isle of Wight, Isle of Man and Ireland.