Wool dryer balls

I bought the Saje wool dryer balls so that I wouldn’t use as many dryer sheets. I bought the set at Saje as it came with a 10ml essential oil bottle called sweet sheets. After adding 2-3 drops per ball I put in the dryer with my clothes. The clothes smell great but I find there is still static on some clothes and this is why I didn’t hide it a 5 on effectiveness. I definitely don’t use as many dryer sheets but still do in fabrics that will have static.