Product title
Vendor
$19.99 | $24.99
Product title
Vendor
$19.99 | $24.99
Product title
Vendor
$19.99 | $24.99
Product title
Vendor
$19.99 | $24.99
Monthly 5-in-1 Spot-On for Heartworm, Fleas and Parasites in Small Cats
Product Description
Barrier Topical Solution (Light Blue Box) is an FDA-approved, prescription-only monthly spot-on for cats and kittens 9 weeks or older weighing 2 to 5 lbs. Each 0.23 mL tube delivers 10% imidacloprid and 1% moxidectin, the same active ingredients as Advantage Multi for Cats. One monthly dose prevents heartworm, kills adult fleas, treats ear mites, and controls roundworm and hookworm infections.
Benefits
- Prevents Heartworm Disease: Moxidectin prevents Dirofilaria immitis larval development into adult heartworms when applied once monthly to cats and kittens.
- Kills Adult Fleas: Imidacloprid kills adult fleas starting within 12 hours of application, providing fast-acting flea relief for small cats.
- Treats Ear Mite Infestations: Treats and controls Otodectes cynotis ear mite infestations in cats and kittens with a single monthly topical application.
- Treats Roundworms: Treats and controls Toxocara cati intestinal roundworm infections in cats and kittens effectively with each monthly dose.
- Treats Hookworms: Treats and controls Ancylostoma tubaeforme intestinal hookworm infections in cats and kittens with every monthly application.
- Safe From 9 Weeks: Approved for kittens as young as 9 weeks weighing at least 2 lbs, making early multi-parasite protection possible for cats.
- Same Ingredients, Better Value: Contains the same active ingredients as Advantage Multi for Cats, offering equivalent five-in-one parasite protection.
- Made in the USA: Manufactured and packaged in the USA from a registered FDA facility, ensuring quality and regulatory compliance.
Ingredients
Composition Table
| Ingredient | Quantity |
| Imidacloprid | 10% (23 mg per 0.23 mL tube) |
| Moxidectin | 1% (2.3 mg per 0.23 mL tube) |
Other Ingredients
Benzyl alcohol, Propylene carbonate
How to Use
Directions for Use
- Prescription Required: US law restricts this medication to use only under the order or supervision of a licensed veterinarian.
- Open the Tube Correctly: Keep the tube standing upright, twist open the cap to break the seal, and apply without removing the cap.
- Apply at Neck Base: Part the fur at the back of the cat's neck until the skin is visible, then place the tube tip on skin.
- Squeeze Entire Contents: Apply the full tube contents onto exposed skin in one spot and allow the area to dry naturally without rubbing.
- Lift Tube Before Releasing: Remove the tube from the skin before releasing pressure to prevent the solution from being drawn back in.
- Apply Once Monthly: Administer every 30 days for continuous heartworm prevention, flea control, and parasite protection throughout the year.
- Prevent Post-Application Licking: Keep the cat from licking the application site for 30 minutes and separate pets until the area dries.
- Test for Heartworm First: Test all cats for existing heartworm disease before beginning a heartworm prevention protocol with Barrier for Cats.
Disclaimer: This dosage information is provided by the manufacturer. Always consult your veterinarian before administering or adjusting any supplement for your pet.
Additional Information
Precautions
- Minimum Age and Weight: Do not use in cats under 9 weeks of age or weighing less than 2 lbs.
- Not for Ferrets: The 0.23 mL Light Blue Box must never be used in ferrets as it does not provide an effective ferret dose.
- Sick or Debilitated Cats: Never apply Barrier to sick, debilitated, or underweight cats regardless of their age or current body weight.
- Breeding, Pregnant, Lactating Cats: Safety has not been established in breeding, pregnant, or lactating cats; consult your veterinarian before use.
- Geriatric Cats: Use with caution in older cats with undiagnosed conditions; prolonged lethargy has been reported in some thin geriatric cats.
- Licking Prevention Critical: Accidental ingestion or licking may cause hypersalivation, tremors, vomiting, and decreased appetite in cats.
- Bathing Efficacy Not Evaluated: Effectiveness against heartworm after bathing has not been evaluated; avoid bathing the cat close to application time.
- Eye Irritant for Humans: Do not let the product get into your eyes, and make sure to wash your hands well with soap and warm water after every use.
Possible Side Effects
- Hypersalivation: Excessive drooling may occur if the cat grooms the treated area; applying at the head base reduces licking risk.
- Vomiting and Decreased Appetite: Vomiting and reduced appetite have been reported when the product is accidentally ingested through self-grooming by cats.
- Tremors: Neurological tremors have been reported following accidental ingestion of the product; contact your veterinarian immediately if this occurs.
- Stiff or Matted Hair: Stiff, oily hair at the application site may appear temporarily; this is cosmetic and does not affect product safety.
- Human Adverse Reactions: Human exposure may cause headache, dizziness, and skin redness, burning, or tingling; seek medical attention if these symptoms occur.
Storage Information
- Store at Cool Temperature: Store between 4°C (39°F) and 25°C (77°F); avoid exposure to excess heat or cold at all times.
- Secure Storage Required: Store this prescription product securely out of reach of children and other animals at all times.
Shipping & Return
We offer ground, express, and priority delivery; see our shipping policy for details.
For return instructions or product concerns, please refer to our detailed refund policy.
Prescription items are NON-RETURNABLE and NON-REFUNDABLE.
Frequently Asked Questions
Q1: What does Barrier Topical Solution (Light Blue Box) treat in small cats?
Ans: Barrier Light Blue Box is a monthly 5-in-1 spot-on for cats and kittens 2 to 5 lbs that prevents heartworm, kills adult fleas, treats flea infestations, controls ear mites, and treats roundworm and hookworm infections in cats 9 weeks of age or older.
Q2: Why must the Light Blue Box not be used in ferrets?
Ans: The 0.23 mL Light Blue Box does not provide an effective dose for ferrets and would result in inadequate parasite prevention. Only the 0.4 mL Orange Box delivers the correct minimum ferret dose of 40 mg imidacloprid and 4 mg moxidectin needed for safe and effective treatment.
Q3: Is the small cat spot-on safe for very young kittens?
Ans: Barrier is approved for kittens as young as 9 weeks weighing at least 2 lbs. It must not be used below these thresholds as safety has not been established. Always consult your veterinarian before starting any topical parasite prevention in young or very lightweight kittens.
Q4: How does the Light Blue Box differ from the Orange Box for cats?
Ans: The Light Blue Box contains 0.23 mL delivering 23 mg imidacloprid and 2.3 mg moxidectin for cats weighing 2 to 5 lbs. The Orange Box contains 0.4 mL delivering 40 mg imidacloprid and 4 mg moxidectin for cats 5.1 to 9 lbs. Both offer identical five-in-one protection.
Q5: Is the small cat monthly spot-on safe for pregnant or lactating cats?
Ans: Barrier is not established as safe for pregnant, lactating, or breeding cats. If your cat is in any of these conditions, consult your veterinarian before beginning any parasite prevention program to select the safest option.
Clinical Research
Imidacloprid – Flea Control Mechanism (NPIC)
Moxidectin – Antiparasitic Applications in Skin Disease (MSD Veterinary Manual)
Feline Heartworm Disease Overview (American Heartworm Society)