✅ POWERFUL COMBINATION OF CLUSTER FLY KILLER PRODUCTS – This highly effective treatment kit contains a combination of the most effective cluster fly killer products on the market. ✅ FAST ACTING AND LONG LASTING – The combination of products kills the cluster fly life cycle on contact and leave an insecticidal residue that continues to protect for up to 12 weeks. ✅ LOW-ODOUR AND NON-STAINING – No smell during or after treatment and will not cause any damage to any household furnishings. ✅ PROFESSIONAL ADVICE – Our kit comes with a step-by-step advice sheet enabling a swift and successful treatment. ✅ COMPLETE COVERAGE – This kit will provide effective multiple cluster fly treatments in a standard loft space.