I stopped using Frontline as I found after ten years of working well it stopped working altogether. After using this product neither dog has fleas. Also no ticks stayed on them after walking in an infested woodland. Did take hours to dry on their coats though which was a nuisance as my puppy wants to play with my other dog and I have had to stop them play fighting together for a whole day.
I changed to this product because the fleas on my 2 dogs and a cat, seem to have become immune to Front Line which I have used for about 13 years successfully. However, since I have changed to Effipro the fleas are gone and no return. I have used this product for approximately 3 years now and would recommend.
Good value for money and seems to work fine on springer and working cocker who are always in and out of the water and knee deep in bracken. I use every 4 weeks and check for tics none so far so I am very pleased with the product two years running.