How Do Flea Collars Work?

dog flea collars

One of the biggest nightmares for any pet owner is having your furry friend suffer from the discomfort and restlessness of fleas and other pests. Once fleas attack your pet, it is only a matter of time before they are all over in your home, on you, and the rest of your family! That is why we would go out of our way to have preventive measures in place long before they happen. One such method is by using the flea collar; a measure that has been tested and proved to work effectively to prevent the infestation of fleas and other pests. So, how do the flea collars work? Are they more preventive than curative? At what point should they be considered an option?

According to pet experts, there are two main ways in which the flea collars are programmed to work; both of which aim at controlling the infestation of pests in your pets.

  1. Flea collars for repelling pests. These types of flea collars have been made to produce a particular kind of gas that acts as a repellant for the pests.
  2. Flea collars to treat existing pests. These types of flea collars have been treated with select chemicals and active ingredients. The ingredients are of two categories. The first one has the ingredients spread out through the pets’ bodies and remains under the skin; the pest dies as soon as they bite the pet. The second ingredient spreads through the skin of the dog and kills any pest upon contact.

The use of dog flea collars has proved to be effective over time, but there is one condition to it; they tend to work better if they are introduced before the infestation becomes severe. If the fleas attack and spread all over the body, the flea collars only become active in the area around the neck and forelegs.

When To Use A Flea Collar

corgie sitting

First, have your dog wear the flea collar if you are not using any other preventive or treatment measures like spot-on applications or tablets. At least the active ingredients in the dog flea and tick  collars will keep away any pests in the environment.

Secondly, use a flea collar if you are going to any of those dog functions that will have your dog in contact with other dogs. You might never know if your neighbor’s dog has fleas or not; so it is vital to prevent rather than treat.

Thirdly, use the flea collar on your dog if you realize that the pests are becoming a concern. Pests multiply fast, especially when in a warm environment like the dog’s skin. If your dog becomes irritable and is continually scratching out his skin, it is time to get a flea collar.

Lastly, the use of dog flea collars is highly recommended if you just had your home cleaned and disinfected of the pests. The few that might be remaining will be cleared off by the active ingredients in the collars. and

Pros of Flea Collars

  • Flea collars are more affordable than most other flea-control measures. Speak to your vet for the best recommendation depending on your dog type.
  • Flea collars are economical and long-lasting. As compared to other spot-on methods of pest control that last up to thirty days maximum, flea collars remain effective for up to eight months and counting.
  • Flea collars are more effective and easier to use. Just have the collar around the neck and secure it firmly. Remember not to have it too tight as it may hinder your dog’s freedom. Have your vet show you how to use the collar if it is your first time.

Cons of Flea Collars

  • Most people say that the flea collars tend to work on the area around the neck only, as opposed to working on the rest of the body.
  • The chemicals and active ingredients in the flea collars may be harmful to children and other pets in your home. If a child touches it or another dog bites it, it becomes extremely hazardous to them.
  • In some cases, the chemicals and repellants in the flea collars become too risky for your dog, as they can cause discomfort and itchiness, especially when used for too long.


Talk to your vet so that you explore all other available options before settling on the collar. Remember to take off the flea collar occasionally during the day to allow the dog to rest and control the amount of active ingredients being released into your dog’s body.

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