Not because spiders enjoy fruit, but because fruit flies do. If you keep that fruit in your fridge, avoid leaving banana peels and peach seeds laying out, and keep your garbage sealed in a can, you'll avoid the fruit flies, and the spiders that eat them.
For a few decades now, there have been urban legends going around that spiders were laying eggs in banana flowers, making for an unpleasant surprise when you peeled open a banana. This isn't true. What is true is that sometimes spiders end up in banana shipments.
ATTRACT BUTTERFLIES AND BIRDS.
Put peels from overripe bananas on a raised platform in the garden and watch them flock to the sweetness. Beware that bees and wasps may be attracted as well.
Adding banana peels directly to the soil (trench composting) has the same issue as using banana water. Nutrients will be unavailable until the peels have completely broken down and unless you bury them deeply, they attract pests and rodents.
While the peel is biodegradable it will be around for a little while before it's completely gone. In the meantime, it's unsightly, may smell bad, and may attract nuisance insects and animals. In an urban or suburban environment, you should find a trash can.
Effective Pest Deterrent: The compounds found in banana peels, particularly limonene, act as an effective natural repellent. These substances irritate the ants, causing them to steer clear of areas where banana peels are present. Not only do the peels deter ants, but they can also help keep other insects away.
Fortunately, fruit flies have an excellent sense of smell and are strongly attracted by bananas. A simple, nontoxic, inexpensive, humane way to trap them is to place a banana peel inside a clear plastic container and make three or four holes in the cover with a standard round toothpick.
Butterflies love a sugary treat, especially during the autumn when food is harder to find. An old banana will provide just that, but do beware that wasps and hornets might also like it too. Be sure to place them away from wherever you might be sitting!
On behalf of law enforcement and environmentalists everywhere, the short answer is “no.”
Soil is alive and has its own ecosystem. If a banana peel is buried in the soil, microorganisms will work to break it down. But this can take away from the microorganisms providing the current nutrients in the soil to your plants.
Jar Traps.
To bait the jar trap, put a small piece of banana peel or bread in the bottom of the jar. During the night, cockroaches will smell the food and crawl into the jar.
Put this item in your Food & Yard Waste container.
Banana peels are sometimes used as feedstock for cattle, goats, pigs, monkeys, poultry, rabbits, fish, zebras and several other species, typically on small farms in regions where bananas are grown. There are some concerns over the impact of tannins contained in the peels on animals that consume them.
Spiders of medical importance in imported bananas are extremely rare. The only ones that have come into this country are called Brazilian wandering spiders (also called banana spiders, or Phoneutria). These are black, hairy spiders, and they can be large, with leg spans up to 2½ inches wide.
Remember That Spiders Are Not Attracted to Your Food (But Their Prey Is) In general, spiders aren't interested in your PB&J. Spiders are mainly carnivores, much preferring a tasty fly, ant, or moth. Some also like to munch on things like leaves, nectar, and honeydew, but these won't be enough to hold their interest.
Bananas. While actual scientific proof of bananas' effectiveness as an insect repellent are a bit inconclusive, some people swear by them.
You'll see, in addition to being a good fertilizer, it's also a great natural tool for repelling insects! Banana peel can also be used to clean green plants and make them shine. Again, cut small pieces of banana peel and rub them on the leaves of your plants! No need to wipe with a cloth afterwards.
Banana peels are biodegradable and can technically be added to gardens as-is, but it takes a while for whole peels to break down and peels won't offer many benefits to plants until they're well-incorporated into the soil.
You can use them as a nutritious layer of mulch (covered with a regular layer of mulch in order to prevent fruit flies). Of course, adding them to your compost pile is always an excellent option. As a bonus, super ripe banana peels can be set out to attract butterflies, who then pollinate and beautify your garden.
The main ones are the pantropical huntsman spiders (Heteropoda venatoria)—big, leggy beasts, very attractive—they're the ones with the white moustache. They're found all over the world in tropical areas. Ecuador is where they're coming from in bananas a lot. And the red-faced banana spider (Cupiennius chiapanensis).
Most households have some sort of fruit—bananas, apples, oranges—kept openly on counters or even on top of microwaves. Mice will avoid these during the day but get bolder during the late night.
And those bananas aren't just a food source for the insects; they also serve as an excellent nursery for their babies, which are actually at the root of the swarm problem here. Within around 24 hours of mating, female fruit flies can lay as many as 500 tiny eggs on surfaces like a banana's peel.
Place small pieces of banana peel around your garden to deter aphids and other common plant pests. The scent of the peel is a natural repellent.
Lay a trap - the banana fly catcher
You can make a simple (and free) banana fly trap by placing some overripe fruit, rose wine or sweet vinegar in a bowl or glass with a few drops of washing-up liquid. You then cover it with plastic wrap and make small holes in the foil.
A warm kitchen is therefore not the best place for your bananas. Pop them into the fridge: If you want to store your bananas correctly, you can certainly store them in the fridge. However, they should be ripe when you put them in as they will not ripen any further in the cool environment.