Как защитить рассаду от гусениц? Советы мамочек-садоводов

Does anyone have any advice on what I can use to keep the caterpillars away from my flower seedlings? This is my first successful (hopefully🤞)garden and they are just chewing away at my sunflowers, the marigolds aren’t affected and hopefully they wont be. I’ve been researching but of course I get conflicted answer.. TIA😽