Have used and found besides the awful smell, It wasnt the greatest stuff to use... One we have found ( North of the Border ) is called END ALL... END ALL dont just kill the Spidermites but if hits the egg patches kills them too On a Second note for emmidiate eradication: Spray with Doctor doom in a Dark area just before lights go off or if Mothers pull from room... 30 minutes after fogging them with Doctor doom we find to wash the plant off with a foiler spray then 30 minutes later folier spray again... Repeat Doctor doom 4 days later for a second time if nessary and foiler and should be done for a while...