It's true that insects like mosquitoes and gnats can ruin a good time in the yard. But there are a lot of very beneficial bugs and spiders as well. Don’t jump too quickly to spray insecticide when you see creepy-crawlies in your garden, as they might be doing you a favor. Ladybugs, after all, will voraciously attack aphids, and those buzzing bees are pollinating your plants and flowers. Most spiders are completely harmless and prey on much more pesky insects. So, avoid getting rid of these beneficial bugs, or search for solutions that target specific uninvited guests.