Help Needed to ID Asian Pear Leaf Disease

[NoVA]

Thank you!
I also found the other old thread about the pet dip.

Using lime-sulfur pet dip?

In Scott’s spray guide, he mentions the difficulty finding lime sulfur spray nowadays and suggested that “pet dip” is the same material. Has anyone ever used the pet stuff on your trees? What’s the dosage? Is there a preferred brand? After a 1 second Amazon search I found this, but I have no idea about it. http://www.amazon.com/Vet-Basics-Lime-Sulfur-16oz/dp/B00550UIZC

Because I don’t use L-S often, I will give lime sulfur pet dip a try. Hopefully it won’t kill the tree.