GelPedic Repel-a-Flea Refill 4 Pack ()

The natural eucalyptus bars are made from authentic eucalyptus plants. The aroma is very strong and should last at least 60-90 days.Replace or refill more frequently if:You have a large petYour pet is outdoors for long periods of timeYou prefer a strong eucalyptus aromaRefill replacement time may vary.