I apologize for this delayed reply to your gardening question and hope it is still helpful to you.
The pavers if set closely together will prevent erosion quite well. Some people set them a little farther apart and put pea gravel in between them but I would recommend closer spacing and then putting some sand on them and sweeping it around to fall in all the cracks for a good tight set.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
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