How do you keep pets away from poisonous plants?

WE PURCHASED A PRODUCT CALLED "SHOT-GUN, DOG AND CAT REPELLENT GRANUALES".i USED IT TO MAKE MY PETS TO HATE GOING NEAR MY LILLY OF THE VALLEY AREA. IT SEEMS DANGEROUS STUFF . i ONLY HAD TO GET THE POINT ACROSS TO THEM NOW THEY DON'T BOTHER. I PERSONALLY WOULD LIKE TO KNOW OF A MORE ORGANIC PRODUCT . GOOD LUCK

I have both delphiniums and a dog....never had any trouble. Mandy doesn't show any interest in them. Perhaps a pup might dig them up or knock them over but eat them? sounds strange to me.

Henry only eats grass - he never tries any other plants in the garden. I trained him to keep off the flower beds early on, for the plants' sakes, but I don't think that dogs are vegetarians anyway! lol - I wouldn't worry.