Drain Flies, Sewer Flies, Gnats, or Fruit Flies, any flies that live and breed in drains, pipes, or garbage disposals will be evicated by our all-natural formula; And it's safe for use in any plumbing, A Natural Fruit Fly Eliminator: Our non-toxic gel formula is safe for use around food and anywhere in the home, kitchen, bar, or restaurant, Home & commercial use Our all-natural gel contains additional scum-busting properties making this the most effective solution; Pour into a drain; this fast-acting treatment breaks up and digests drain scum, Occasional use of this gel treatment will keep your drains odor and scum free; By preventing the buildup of organic scum, you eliminate the risk of another problem