Has anybody used [[https://www.petdrugsonline.co.uk/seresto-dog-flea-collar-with-tick-control?gclid=EAIaIQobChMIjfj25citgIVVIFQBh3QvgXjEAQYASABEgLd8PDBwE#646=7549 Seresto collars?]] Do they work? I usually use Bravecto but perhaps this is a better and equally effective choice? Ticks are a really big problem where I live.