My tomatoes continually get ravaged by leaf miners. I've tried using Safer and Neem and neither have worked sufficiently - even when I remove the affected leaves and kill the pests when I see them. My tomatoes can't grow fast enough to keep ahead of the damage. I've heard of parasitic wasps being helpful, but I don't know where to get them and don't know if they are aggressive and sting (I have a toddler who likes to play in the yard). Does anyone have some ideas that might help? I'd really like to keep away from using chemical pest control if at all possible. Thank you!