To keep the squirrels out, I made cloches using chicken wire. It took me about $8 and an hour to make six of them. They're kind of an eye sore but it's worth it to have piece of mind that the squirrels can't dig up my seedlings. (One year they totally ruined my potted basil.) They're pretty easy to make. All you need are wire cutters, leather gloves, and chicken wire. I can easily take them off to weed. When the plants get big enough, I'll toss the cloches and mulch around the stems using grass clippings and dried leaves.