Xenex Ultra Spot-On Pharmaceutical particulars FOR ANIMAL TREATMENT ONLY. Major incompatibilities None known Shelf-life 36 months Special precautions for storage Store below 25°C. Protect from light. Do not refrigerate. Keep out of reach of children. Extremely dangerous to fish. Do not contaminate ponds, waterways or ditches with either product or packaging. Empty containers and packaging should be wrapped and disposed of in domestic refuse. DO NOT KEEP OPEN TUBES FOR FUTURE USE. Nature and contents of container Blister packs each containing 6 polypropylene (PP) tubes of 1 ml 65%w/v permethrin.