Slugs everywhere; cannot sow seeds at all
I have sowed sunflower seeds 3 times this season, but none of them survived. After the second time of sowing, I put a layer of coffee ground over the top soil and made sure it covering well in the perimeter of the size of a palm.
This 3rd time was the only time I even saw the happening of the delightful sprouting. From the morning, I saw the first baby leaves coming up 1/4" above the ground and grew up 1/2" at sunset. I was hoping that the coffee grounds really did their magic. Nonetheless, all the sprouts were gone this morning with all clearly seen slimy traces, while a few slugs were still hanging around.
Please advise me what other none-killing methods I can use to prevent slugs getting to any sprouts. I saw some ads of copper tape that would shock slugs, but I have not gotten it. I am not sure if it is working. A lot of people told me to use some slug killing media, but I don't wish to kill them. It does not matter how small a life is; it IS a LIFE. Thank you in advance