T.F.
I won't use them. It is not worth potential damage to my printer.
What type of printer do you have? We have an HP Office Jet Pro 8600 we purchased in July. I work from home and print a LOT. It is December and the initial set of cartridges that came with the printer have not run out yet.
I did spend about $100 on HP replacement cartridges for future use and I buy the more expensive one that gives you more printing.
I buy my cartridges from Staples.