Sentinel Spectrum Tasty Chews - Very Small Dogs 0 to 4kg (Red) 6pk, For the prevention of heartworm, the long term control of fleas and the control of all intestinal worms including tapeworm

Sentinel Spectrum Tasty Chews - Small Dogs 4 to 11kg (Green) 6pk, For the prevention of heartworm, the long term control of fleas and the control of all intestinal worms including tapeworm

Sentinel Spectrum Tasty Chews - Medium Dogs 11 to 22kg (Yellow) 6pk, For the prevention of heartworm, the long term control of fleas and the control of all intestinal worms including tapeworm

Sentinel Spectrum Tasty Chews - Large Dogs 22 to 45kg (White) 6pk, For the prevention of heartworm, the long term control of fleas and the control of all intestinal worms including tapeworm