I've made some cover scent before by boiling some acorns, oak leaves, dirt, twigs, etc and bottled it in a spray bottle. Worked pretty good except that the spray nozzle at the bottom of the bottle would get clogged (which filtering the mixture would cure the prob) and when I sprayed my clothes it would put some brown spots on them (that washed out) b/c the mixture was a dark dark brown color after boiling.