We will be rolling out several small fixes mid-day today (Jan 29.) We do not anticipate any disruptions or problems, but f you spot any unexpected issues after 12 noon (PST), please report them in the designated thread in the DG Site Updates forum.
Yes, Safer's Soap will work and won't burn the plants either, if mixed according to directions. However, with plants that small I'd just spray them with a hard spray of water and wash them off. In other words, save some money and also get them boogers off of there asap.
Best to you and your garden, Molomola. (I luvs dem collard greens!)