Hi again Kathy, I went to Tractor Supply and Southern States, a local feed store, and could only find Safeguard feed for use with cattle, swine, and Turkeys. I also found another deworming feed for chickens called Strike 3, Type B. Strike 3 did not mention if it could be used for egg laying chickens. I will check out your link for tubing our girl.
Edith
Safeguard is labeled for goats, cattle and horses, but is used for poultry. If you bought something other than Safeguard, take it back and get the Safeguard if you want to be sure that you are de-worming effectively.
-Kathy