Flea Treatments

We do our dogs on a regular basis, but had an interesting conversation with our vet regarding Frontline and others that use the same active ingredient. Apparently there is some evidence that fleas are becoming more resistant to these popular brands, and it pays to use different ones. This makes sense to us as ex horse owners, as when worming you had to change the type of wormer to catch all the different types and to guard against resistance.

Have any other dog (or cat owners) heard anything similar? Have had a brief look on Internet, but nothing conclusive. We have a dog with super sensitive skin so anything that could help.

anyone tried Camrosa products?