Advantage II stops fleas from biting in three to five minutes, starts killing fleas within an hour and kills all flea life stages. Within 12 hours of initial application, 98-100 percent of all existing fleas on pets are dead. For cats 8 weeks and older.

• Quantity: 4-month supply
• Use: For cats 5-9 lbs. & 8 weeks or older
• Waterproof for 30 days
• Prevents fleas on treated cat from infesting your home

• Animal Type: Cats
  
• Brand: Advantage
  
• Duration of Treatment: 4 Month
  
• Minimum Age Recommended: 8 Week
  
• Weight of Animal: Less than 9 Pounds
  

Standard shipping via UPS Mail Innovations is included in the price. The estimated delivery time will be approximately 5 - 7 business days from the time of order.

This service is a combination of UPS and USPS shipping. Packages are delivered by USPS. Packages can be tracked at upsmi.com. Additional transit time may be required for Alaska, Hawaii and Puerto Rico.

Delivery is not available to Puerto Rico.

Costco.com products can be returned to any of our more than 600 Costco warehouses worldwide.

Membership: We will refund your membership fee in full at any time if you are dissatisfied.

Merchandise: We guarantee your satisfaction on every product we sell with a full refund. The following must be returned within 90 days of purchase for a refund: televisions, projectors, computers, cameras, camcorders, touch screen tablets, MP3 players and cellular phones.

How to Return: For an immediate refund (including shipping and handling), simply return your purchase at any one of our Costco warehouses worldwide. If you are unable to return your order at one of our warehouses, please email customer service or call our customer service center at 1-800-955-2292 for assistance. To expedite the processing of your return, please reference your order number.

If you request an item be picked up for return, the item must be packaged and available for pick up in the same manner as it was delivered.
If your order was delivered "curb side", it will need to be available for curb side pick up.
If the item arrived to you in a box, it will need to be in a box at the time of pick up.