Great question — answering as the UphillTech team:
This used to happen to me but I loved the smell so much I didn’t want to stop using them so the only thing I could think of to do was to dissolve the scent balls in some hot water first then add them when the wash starts.
Full answer by Kee: https://lifehacks.stackexchange.com/a/27569 (CC BY-SA 4.0).
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