If you’re asking whether this claim is true: a homemade mixture left on for an hour is not reliably enough to get rid of all flying and crawling pests. Results depend on the pest (flies, ants, cockroaches, mosquitoes, etc.), the ingredients, and where/how it is applied.
Some homemade solutions may help repel or reduce certain pests temporarily, but a lasting solution usually involves:
- removing food and water sources,
- sealing entry points,
- cleaning breeding areas,
- using pest-specific traps or approved treatments when needed.
If you mean a specific mixture or want to rewrite this sentence as a headline/advertisement, tell me the context.