Highly Effective and Great Value For Money - Each Diluted Litre of Spray Costs Pence! Indoor Spray - shake oil bottle well. Fill a spray bottle with fresh water and apply six drops of oil to the water per 100ml. Shake well. Spray areas such as lofts, cellars, fireplaces, etc.Outdoor Use - shake oil bottle well. Fill a fine spray watering can or spray bottle with fresh water and apply ninety drops of oil to the water per one litre. Shake well. Water or spray all areas that you would like squirrels not to enter or use such as soil, plant beds, lawn areas, gates, fences, bushes, pipes, sheds, etc.