Intellipet Citronella Anti-Bark Dog Collar Spray Refill, 2.4-Ounce This citronella-scented spray refill is used with the intellipet citronella anti-bark dog collar Effectively and humanely stop nuisance barking Refill lasts for approximately 18-23 uses Contains harmless, non-staining citronella-scented spray Measures 5-inch length by 1.5-inch width by 1.5-inch height