Throw out the old petroleum based stuff and start using herbal dishwashing liquid with chamomile and marigold made by Ecover. We have switched and so have scores of our friends and friends' friends. Everyone agrees:
Ecover is an international company producing ecological, phosphate-free cleaning products. Known for their environmentally friendly, sustainable product development, they use only raw materials from vegetable and mineral (non-petroleum based) sources that are renewable, guarantee maximum biodegradability and leave no chemical residue.
(Available at Whole Foods stores nationwide)
Say 'Good riddance' to petrochemicals.