This is probably about the 5th time I have used this in multiple gardens. It ALWAYS works well & produces grass in bare lawn patches. I recommend this rather than just using grass seed although it is substantially more expensive, it is worth it for the ease of use.
If you have a tatty lawn this is the answer to all your prayers
Make sure you put it on your lawn just before it rains and within
A week hey presto your lawn is all green and lush MAGIC