The Rentokil Mouse and Rat Odour Sachet is highly fragranced to mask the smell left by mice, rats and other pests in and around the home. The easy to use sachet is long lasting and contains no poisons. Ideal for use under floorboards or behind walls. Lasts up to 6 weeks How to use: Follow the on pack instructions.Remove the outer foil and place the sachet in the desired location.To remove, simply pick up (if possible) and dispose in a bin with a secure lid. Where to use: This product is intended for home and garden use. Ideal under floorboards and behind walls. Always read the label before use.