Quoting the Torah Matzav:
“Only those סגולות that the סגולה is in itself a Mitzvah (e.g., סנדק – paying tuition for others). Those Segulos one should do.”
As he explains: Even if the סגולה won’t work, the זכות of doing theמצוה might work. Most of the other non-Mitzvah סגולות are a waste of time to do. (סתם ג’האקט אין קאפ אריין)
Seems wise to me.