Pest control TikTok is a mix of genuine practical advice, ancient folk remedies repackaged as "hacks," and outright dangerous misinformation. Some viral videos show techniques that pest professionals actually use. Others show methods that have been debunked for decades but look compelling in a 60-second video. Here's the evidence-based verdict on the most viral pest hacks.
Borax + sugar water for ants ✅: This is legitimate — it's the same principle as commercial TERRO ant bait. Dissolved borax in sugar syrup is carried back to the colony by workers and shared with the queen through trophallaxis. Use a 1:3 borax-to-sugar ratio dissolved in warm water. Place in shallow containers along ant trails. This is proven chemistry with decades of research.
Apple cider vinegar + dish soap for fruit flies ✅: Works well as a trap. The vinegar attracts fruit flies, the dish soap breaks surface tension so they drown. Not a standalone solution (you still need to find and remove the breeding source), but effective as a supplementary trap.
Peanut butter on snap traps ✅: Professional-grade advice. Peanut butter is the #1 recommended mouse bait — sticky (mice can't grab and run), aromatic, and highly attractive. Much better than cheese. Apply a pea-sized amount on the trigger plate.
Diatomaceous earth in garden beds ✅ (with caveats): Food-grade DE does kill crawling insects through desiccation when applied correctly (thin layer, dry conditions). Works for slugs, earwigs, and some garden pests. Does NOT work in wet conditions or thick applications.
Cinnamon to repel ants ❌: Ants will walk around a cinnamon line within minutes. It's a temporary visual barrier at best — ants simply find another path. Zero lasting effect. Use actual ant bait instead.
Dryer sheets for mosquitoes ❌: No peer-reviewed evidence of significant repellent effect. The linalool content is far too low to provide meaningful protection. Use DEET, picaridin, or OLE for real protection.
Rubbing alcohol spray for bed bugs ❌: Kills on direct contact but evaporates instantly with zero residual. Creates a serious fire hazard — multiple house fires have resulted from this "hack." Never use rubbing alcohol for bed bug treatment.
Pennies in a bag of water to repel flies ❌: This myth has been tested and conclusively debunked. The refraction theory is folk science with no basis in fly behavior or vision.
Peppermint oil for mice ❌: Temporary avoidance at best — evaporates in 24 hours, mice habituate quickly, established mice ignore it entirely. Use exclusion and traps.