Amgrow Patrol 4 Litre Professional Strength Outdoor and Indoor Barrier Spray RTU forms a barrier against pests such as spiders, ants, fleas, paper-nest wasps, cockroaches, mosquitoes and flies before they get inside. The product can be used around the perimeter of the home, under eaves, guttering and down pipes, around window frames, under the house and around foundations. The product is ready to use so no mixing is required. How to use: Spiders: Spray directly onto spiders or where webs are present. For long-lasting protection spray under floors eaves around windows, protected areas and inside cracks and crevices. Repeat when spiders begin to reappear. Ingredients: 3g/L Bifenthrin.