Me too! I did get problems with fleas back in Northants, and used those spot treatments, but the smell was so awful Imwas very wary of them. Since being in Scotland we haven,t been bothered with fleas, especially now the next door cats are deceased! Ticks we can pick up every day, we have deer, rabbits and game birds in our garden, so Dylan is groomed every day and any ticks removed. He mostly gets them on his heads, so I keep it clipped and they are easy to spot. So I don't use any preventative.
As for wormers , I have always worked three times a years, as per vet instructions. Last years I used Drontal and Dylan was very ill after that, with terrible diarrhoea which just wouldn,t stop despite starving twice and feeding chicken and rice. We were in the northern highlands on hols at the time, and vets are thin on the ground up there. Eventually we found a vet who gave him Canicur as his gut bacteria had been stripped out. It sorted the problem. He is due for worming now and I have to visit the vet and see what else to use, I certainly won,t use Drontal again.
Lesley and Dylan