Encourage your dog to play for longer with the PetSafe Sportsmen Barnacle refillable treat dispensing toy. The Barnacle dispenses treats at random to keep your dog guessing for a longer playtime. The patented Treat Meter can be easily customised - simply trim the Treat Meter prongs with scissors to increase the rate at which treats come out. The three separate chambers can hold a variety of treat options including dry and semi-moist treats. For an additional surprise, smear the bone-shaped grooves with your pet's favourite spread e.g. peanut butter. Suitable for large dogs (e.g. Retriever, Shepherd, Boxer) over six months. The unit is dishwasher safe - top rack only.