I, too, am very afraid of using topicals for fleas and ticks, especially with bad sdx from Seresto Collar. After much research, found FOOD GRADE and FOOD GRADE only stated on package: Diatomaceous Earth, which is also edible, (again make sure stated on package) – just rub into dogs and cats fur and will prevent fleas and even deer ticks …and will kill those already attached. Very easy to use – used a 1/2 cup of this powder on my large breed puppy rubbing it into coat, avoiding eyes. Just FYI. Hope this helps! Read package diligently as some DE has chemicals in it for other purposes.
Melinda and Snowy
