With the pill bugs and sow bugs, I treat the garden beds for them once they reach a large enough level that they are damaging green plants or (horrors!) eating green or red tomatoes, which seem to be their favorite summertime food in my garden. When they are in the compost pile, I ignore them because in that case, they are beneficial as they are decomposers who help break down the organic matter in the pile. I don't worry excessively that I'm transferring them from the compost pile to the garden because I tend to transfer compost during the cold months when they don't seem to be very active. Slug-Go Plus is even better than the original Slug-Go, by the way, because they've added spinosad to it and the spinosad helps keep cutworm activity to a minimum. I've had good results with either one though.

With the ants, try to figure out why they are there. Are they aggressive? Are they fire ants? Are they eating some part of your potato plants or are they just moving above-ground to get out of extremely wet soil if you're in an area that has recently had heavy rainfall? The only organic control I've found that really works with ants is an organic fire ant product that contains spinosad. There are several brands available but the particular one I see in stores in my area is by Green Light. I've linked an image below so you'll know what it looks like. If treating for ants, please be sure you use a product labeled for use around edible crops....most non-organic fire ant products cannot be used anywhere near edible crops.

Dawn

Here is a link that might be useful: Green Light Organic Fire Ant Bait