Wasps are attracted to sweet foods, protein-rich meat and insects, bright colors, floral scents, and sheltered nesting spots. What draws them in shifts dramatically depending on the time of year, and understanding that seasonal pattern explains most of the annoying wasp encounters people deal with.
Sweet Foods and Sugary Drinks
Sugar is the primary fuel for adult wasps. They feed on fruit, flower nectar, tree sap, and rotting fruit to sustain themselves. This is why open cans of soda, fruit salads, juice boxes, and cocktails at outdoor gatherings become wasp magnets. Any exposed sugary liquid or food will draw them in, sometimes within minutes.
The craving for sweets intensifies in late summer and fall. From roughly August through October, wasps shift their food preferences heavily toward sugars and carbohydrates. By that point, colonies are slowing their growth and need large amounts of sugar to keep the queen and workers going. That’s why yellowjackets seem to appear out of nowhere at September picnics and barbecues, hovering around garbage cans and landing on your plate. They’re not being randomly aggressive. They’re hungry for sugar in a way they weren’t earlier in the season.
Protein: Meat, Insects, and Pet Food
From spring through midsummer, wasp colonies are in their growth phase, and larvae need protein to develop. Workers spend most of their foraging time hunting other insects, primarily caterpillars and flies, which they chew into a paste and feed to the developing young. A colony of just 200 yellowjackets can kill around 5,000 caterpillars over a single summer.
This protein drive also extends to human food. Wasps will scavenge meat, fish, and pet food left outdoors. If you’ve ever had a yellowjacket land on a hamburger at a cookout, that’s the colony’s protein needs at work. In fall, ground-nesting and cavity-nesting yellowjackets become especially persistent scavengers, showing up around outdoor dog and cat food dishes, garbage cans, and anywhere meat is accessible.
There’s a fascinating exchange happening inside the nest that ties the protein and sugar preferences together. Adult wasps can’t digest the insects they catch. Instead, they feed chewed-up prey to the larvae, and the larvae secrete a sugary substance that the adults consume. So the adults are essentially trading protein for sugar with their own young.
Bright Colors and Floral Patterns
Wasps navigate visually when searching for flowers, and your clothing can send the wrong signal. Bright, floral colors like yellow, orange, and red resemble flowers and attract wasps toward you. Dark colors and bold patterns can also draw their attention.
If you want to minimize wasp interest while spending time outdoors, light and muted tones work best. White, beige, and light pastels are significantly less appealing to both wasps and bees compared to dark or vivid clothing. This is a simple change that makes a real difference during peak wasp season.
Floral and Fruity Scents
Perfumes, colognes, and scented lotions with floral notes can draw wasps directly to you. They mistake the smell for nectar and investigate. Fruity shampoos, scented sunscreens, and heavily fragranced laundry detergents can have the same effect. If you’re heading to an outdoor event during late summer, unscented products are a safer bet.
On the flip side, certain strong scents actively repel wasps. Clove oil is particularly effective. In one study, it reduced wasp visits to baited traps by 95%. A blend of clove, geranium, and lemongrass essential oils completely blocked wasps’ attraction to meat baits and chemical lures. Peppermint, eucalyptus, citronella, and cedarwood oils also show repellent properties. Growing mint, lavender, basil, marigolds, or geraniums around a porch or patio can help keep wasps at a distance, since they tend to avoid these strong aromatic plants.
Sheltered Nesting Sites
Wasps are drawn to protected, undisturbed spaces for building nests, and the type of spot depends on the species. Yellowjackets commonly nest underground in abandoned rodent burrows, but they also move into wall cavities, ceiling voids, and other enclosed spaces in buildings. Some aerial-nesting species attach paper nests to eaves or tree limbs, enclosing them in a gray paper envelope with a single entrance hole at the bottom.
Paper wasps prefer open, horizontal surfaces. They build their distinctive umbrella-shaped nests under eaves, porch ceilings, beams, outdoor furniture, and tree branches. The European paper wasp also nests inside small cavities like hollow furniture posts, light fixtures, and outdoor appliances. They tend to favor areas near orchards or vineyards and are generally less aggressive than yellowjackets, only becoming a problem when nests are near doors, windows, or walkways.
Mud daubers, the slender, dark-colored solitary wasps, build small hard nests out of mud on walls, under overhangs, and in garages or sheds. They rarely sting and are the least concerning of the common wasp types.
How Attraction Changes by Season
The seasonal pattern is the most practical thing to understand about wasp behavior. In spring and early summer, wasps are focused on building colonies and feeding larvae. They hunt insects and generally stay away from human food. You might see them around your garden picking off caterpillars, which is genuinely beneficial pest control.
By August, the dynamic flips. Colonies have matured, larval production slows, and workers lose their main source of sugar (the secretion from larvae). They start foraging aggressively for sweets, and that’s when they become a nuisance at outdoor meals. Ripe and overripe fruit on trees or the ground becomes a major attractant. So do open trash cans, recycling bins with empty juice containers, and any uncovered food.
Ground-nesting and cavity-nesting yellowjackets are the worst offenders during this late-season scavenging period. Aerial-nesting species, interestingly, don’t become scavengers in the same way, but they are extremely defensive if you disturb their nests. Paper wasps remain relatively calm throughout the season and rarely sting unless you’re right next to their nest.
What Keeps Wasps Away
Covering food and drinks at outdoor gatherings is the single most effective step. Wasps can’t be attracted to what they can’t smell or access. Keep trash cans sealed, pick up ripe fruit from the ground, and bring pet food indoors.
For your body, skip floral-scented products during wasp season and wear light, muted clothing. Planting mint, lemongrass, or lavender near outdoor seating areas adds a layer of natural deterrence. Dabbing diluted peppermint or clove oil around patio furniture or doorways can also discourage wasps from lingering. Some people find that burning ground coffee in a small dish produces a smoldering smoke that keeps wasps and flies away from an immediate area.
Checking for nests early in the season, before colonies grow large, makes removal much simpler. A paper wasp nest in May might house a single queen and a handful of cells. By August, it could hold dozens of workers ready to defend it.