I've been using Deer Scram for a few years in my yard. The 25 lb. bucket doesn't quite last me a summer-fall season. I have a herd of deer wandering through my yard several times a day. They avoid my hostas and hydrangea when I apply Deer Scram. I have to apply it every couple of weeks, especially if it rains. My dogs seem to like the taste of it...so need to keep them away right after I apply it. No nasty odor and the grass where I apply it is super green.
Deer Scram Deer and Rabbit Granular Repellent is recommended by grantacre