I have heard of people using a pair of tweezers and a magnifying glass and picking them off their lawn one by one.
Personally, I think that is too slow and causes back pain. Wish I had more info for you but I don't. Sorry.
Well it's something to do between monitoring Sorcha Faal and going to Shuffleboard...I'll meet you , we can make Bingo after that. Then go the AARP meeting online