To ascertain when to replenish, control the thickness and physical appearance with the wood shavings. If they have got substantially decomposed or if weeds are beginning to split through, it’s the perfect time to incorporate a new layer. Mulch: Shavings can be used as mulch in gardens and landscaping. https://paxtondnvdk.wikienlightenment.com/7816314/woodpecker_shavings_no_further_a_mystery