No, you should not wash your dog with a flea collar. Flea collars are designed to be used as a preventative measure, and they will not kill adult fleas or eggs on your pet. If your pet has fleas, the collar won’t have any effect on them, so washing your pet with a flea collar would be ineffective in eliminating the fleas.
In fact, it is not recommended that you use a combination of products (i.e., shampoo and flea collars) due to potential incompatibilities between them — this could result in an undesirable outcome such as skin irritation.
For effective flea control, it is highly recommended that you consult with your veterinarian first who can provide specific advice based on your pet’s age and health condition as well as the type of flea infestation present. Your veterinarian may recommend using oral or topical treatments that have been approved by the EPA.
Putting all together
If you want to keep your pup looking fresh and clean, take off their flea collar before bathing them. This will help reduce any potential risk of irritation or negative effects on your pet’s health.