We were recommended the fine pine bark mulch against weeds – and it works! We replenish the mulch layer every year, in February, and we have had no problems since we started using it.
I use it under snakes and spiders, the 2-6—cm (medium size) bark mulch has so far worked really fine.
We laid coarse pine bark mulch on our playground in a thickness of 20 cm and it works fantastic. We received excellent quality bark mulch.
The pine bark mulch purchased from the company has been working great against weeds, as well as in water retention. We also received advice as to what we should pay attention to.
The mulch was perfect for our purposes and though it sometimes had mites in it I almost always got problem-free goods.