My suggestion is to add borax to your wash. You can probably find a box of "20 Mule Team" borax in the laundry aisle of your grocery store, so just follow the directions.
By the way, borax is also great for getting odours out of drains, dustbins, all sorts of places. You can mix equal portions - say about 3/4 cup each - of borax and baking soda, pour the mixture in your drain or disposal followed with a pot of boiling water. It will really help get rid of nasty smells. Sprinkle about a half cup in the bottom of your kitchen waste can to control bad smells, too.
Finally, you can use borax to make a great cleaner for all sorts of things around the house. As you can tell, I think this old-fashioned product is far too under-used... And in my humble opinion, far better than the artificial perfume cover-ups that have taken over the marketplace.