Reviews

I have ordered this product numerous times over the last few years. Performance as advertised. Easy to use. Instructions large
enough to read. Shipped in a timely manor.
Thanks for a great product.

Good price for this product.

Ordering was quick and easy. Delivery was prompt. When Keystone has a product I need they will surely be my supplier.

I use Topsin in conjunction with some other fungicides as part of a rotation to prevent possible immunity buildup on my wine grapes. Topsin is an important part of my arsenal. A user needs to exercise caution if they are using small amounts from the water soluble bags. The bags will easily disintegrate, as designed for large scale applications, if any water should be accidently spilled on them.

Worked well to eliminate filamentous algae in our pomd.

We have used this product in our certified organic orchard for several years with reliably good results. It does well as a fungicide on apple scab, our principal target when we use accurate weather data. Keystone's prices were significantly better than four other on line suppliers we checked. One negative: two of the bags were leaking on delivery.