Weaver Mulch is a part of the COSTARS 14 contract which supplies and delivers certified playground surfacing. Need installation of the product as well? We can provide that service too! Our Safe Cover Playground Mulch is a certified, double ground, wood playground mulch that undergoes additional screening for both fines and metal, as well as rigorous quality controls on raw materials. Safe Cover is certified by TÜV SÜD America through the International Play Equipment Manufacturers Association (IPEMA) to meet ASTM F1292 (Section 4.2) and ASTM F2075 standards.