Seargent has an All Natural Spray that uses oils. I'm not to sure if you should use it if you use frontline though...maybe some one else can answer because I was looking at it too but don't know if it's safe to use along with Advantix...
Can anyone help????
Here is the link to the product: (It's available at Target)
Naturally Safe Flea, Tick & Mosquito Control – SENTRY® Natural Defense™