How to Control Rats in a Basement?

Hey everyone!

After rats chewed through my sump pump line and turned my basement into a rodent water park​​, I spent $15k testing every rat-control myth. Disasters included:

  • ​​Dryer sheets​​: Rats used them to build floating nests in the floodwater.
  • ​​Ultrasonic alarms​​: Vibrations cracked my foundation walls (rats laughed).
  • ​​Cayenne pepper barriers​​: Created a rat-friendly jacuzzi when pipes burst.

Now I’m using ​304 stainless steel mesh + hydraulic cement​​ on cracks and ​​motion-activated strobes​​ in crawl spaces. But how do we defend basements against rats that treat leaks like VIP pool parties?

Rats enter via ​​1/4" utility gaps​! Seal with ​​copper wool + Gorilla Sealant MAX​ (ASTM G21 mold-resistant). Install ​​sloped gravel trenches​​ outside, rats hate soggy paws.

Rat urine soaks into ​​porous concrete​, spray ​Enzyme-K 9000​ (200/gal) to break down urea. Health Dept Fined me 5k for using bleach (toxic fumes).

DIY electrified wires violate ​​NEC 690.31(F)​​ unless GFCI-protected. Fines up to $10k! Use ​​stainless steel bristle strips​​ instead, legal and shreds rat paws. Court-approved!

1900s stone basement? Rats use ​​lime mortar gaps​ as condos. Repointed with ​rat-poison-infused mortar​​ (1% bromadiolone). Archaeologists cried. Rats died.

​​Peppermint oil foggers​ ​flooded basement, triggered ​​asthma ER visit​​. Switched to ​​predator urine ice cubes​, slow-release stink. Rats left. My marriage? On thin ice.

Rats swam up my toilet! Installed ​multi-flap backflow valve​ + ​​Teflon-coated blades​. Now rats get haircuts before entering. Plumber said I’m ‘creative.’ Health Dept said I’m ‘terrifying.’

Most policies exclude ‘vermin floods.’ BUT if rats chew ​​appliance hoses​, claim ‘sudden mechanical failure.’ State Farm paid $8k for my drowned home theater.

@HistoricHomeGuy Poisoned mortar = ​​EPA FIFRA violation​​ ($25k fine!). Use ​​boron-infused mortar​, kills rats via calcium paralysis. EPA Code 40 CFR 152.25 compliant.