Hello, and thanks for writing in.
How long ago might this have been eaten?
How much does your dog weigh?
Is your dog showing any symptoms?
Thanks for your reply.
You can try inducing vomiting by giving 2 tablespoons of hydrogen peroxide in the back of the mouth. If there is no vomit produced, you can repeat the dose of peroxide once. This may help bring out the SOS pad.
All of the information I have from veterinary toxicology specialists say that the soap on the pads can be irritating, but not truly caustic - so the soap may cause digestive tract upset. The bigger concern lies with the steel wool pad itself, since it can be very irritating to the digestive tract, can cause a blockage. The consensus is to have it removed with endoscopy or surgically, if it's not vomited up - in order to prevent a blockage from happening, since that is a common occurrence with these pads.
I hope this helps. Let me know if I can help further.