Mild cases of kennel cough can be treated at home by not allowing your dog to overexert himself and making sure he drinks plenty of water. Keep him on a diet of soft food that won't scratch his throat. Use a humidifier if the air in your home is dry.

It may be that your dog has a chronic case that comes and goes. If you can afford a vet, it might be a good idea to have your dog examined to see if it has a secondary infection that may need to be treated with an antibiotic.

Here's a link to an article about kennel cough and how to treat it. It may have some more information you can use.

http://www.associatedcontent.com/article/238197/symptoms_and_treatment_of_kennel_cough.html?cat=70

Canines with kennel cough are generally treated at home with antibiotics since more severe clinical signs are due to bacteria involvement. One way to prevent your dog from getting kennel cough is to not get boarded or groomed, if you do. Other dogs can transmit the disease as well, since it is aerosolized in the environment, so coughing and sneezing can spread it. As well as sharing food/water bowls and general interaction with dogs. Cats can't get kennel cough. Also is your dog vaccinated every year for kennel cough?

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Home Treatment

You can always play it on the safe side and take your dog straight to the vet when you suspect your dog has a case of kennel cough. Your vet will likely prescribe an antibiotic right off the bat to head off a possible secondary bacterial infection. Generally there's no harm in doing this, but it can take a big bite out of your wallet.
Conventional Home Treatment

Just as when children have a cold, some pet parents prefer to let a simple case of kennel cough run its course while they provide comfort and relief for their dog at home.

Basic home treatment for kennel cough includes:

* Keeping your dog warm, quiet and free from drafts
* Removing your dog's collar to prevent excessive coughing stimulation
* Encouraging your dog to drink plenty of fresh water
* Providing wet food just in case your dog's throat is sore and irritated

You can provide additional relief for your pet by giving him a vaporizing treatment three times a day. Run a hot shower in your bathroom and let the steam build up with the door closed. Take your dog into the bathroom and let him breathe in the steam for 20 minutes. The vapor will help open his bronchial tubes, which in turn makes his coughs more productive. This will enable your dog to rid himself of more of the phlegm clogging his airways.
Homeopathic Treatment

A quick search of the Internet or your local health food store reveals a number of homeopathic products that can be used as a home treatment for kennel cough. These products are designed to support your dog's immune system and enable it to fight off the infection on its own. Although each product has its own unique formula, there are a few botanical ingredients that appear time and again on various labels.These include:

* Plantago lanceolata: Plantago is a well known herbal remedy in the homeopathic community. It's an all around cough treatment that acts as an expectorant to help your dog cough up the mucous, as well as an anti-catarrhal to prevent mucous production. This in turn eases inflammation of the bronchial tubes and provides your dog a measure of relief.
* Echinacea purpurea: Echinacea is regarded as an immune system booster that fortifies the body's fight against cold and flu. Furthermore, it provides additional support to the immune system after an infection until your dog is 100% recovered.
* Bryonia C6: Bryonia works double duty to moisturize irritated mucous membranes as well as clear mucous out of the system.

NativeRemedies.com also offers a product called KC Defense that is supposed to help dogs recover quicker, but you can only judge its effectiveness if you choose to try it.