What is a safe garden poison?

I am often asked if I can recommend “a really strong poison/pesticide/weedicide”. This poison needs to “kill the ants/lawn grubs/cockroaches/spiders/weeds etc that are causing problems in my garden”.  That’s fine, but then they ask for the poison to “be safe for my children and pets“. Normally this request is also accompanied by a desire for … Continue reading What is a safe garden poison?