i think you need a 'liquid solvent' i apologize but ive forgotten the actual name of it...but its used to mix with FO for incense and...potpourri (i think i spelled it right) but ive never made any so i dont know the purpose for it or any ratios..but ill check it out for ya -edit- DGP "You can also use a liquid potpourri mixture of fragrance oil and incense solvent (DPG) and apply to dry potpourri with a spray bottle, continually spraying and mixing around until evenly distributed." but it also says you dont -have- to use it..that you can use straight FO "Add fragrance oil to the potpourri mix..." and "1/4 to 1/2 oz. per pound, depending on desired scent strength." so i suppose its up to how you want to do it..