Waterproof Ant Repellents

Sticky Repellents

• A sticky repellent like Tanglefoot prevents the ants from accessing the area inside the perimeter of application. The sticky substance withstands moisture and retains its sticky properties even in wet weather. Wrap tree trunks and other upright structures with a fabric tree wrap and apply the sticky repellent to the fabric. The ants can't cross the band of repellent because their feet become stuck. Although sticky repellents are waterproof, they do require reapplication when they begin to lose their sticky properties.

Dust Repellents

• An ant dust kills ants that come in contact with it. When applied in higher quantities, the ants avoid the area completely. Not all ant dusts are waterproof. Those that are have their waterproof capabilities listed on the label. Ant dusts that contain deltamethrin, such as Terro, typically resist moisture and remain effective for up to eight months before requiring reapplication. Dusts do contain a poison, so avoid using them in areas where children or pets may come into contact with the insecticide.

Caulking

• Caulking entrance points in the home provides a waterproof method for repelling and excluding ants without the need for chemical applications. A silicone-based caulk repels moisture and suffers no damage, even in wet conditions. Ants often gain entrance through the openings where pipes and wires enter the home. Caulk around these areas to seal any cracks. Poorly sealed windows and doors can also provide an entry point, which proper caulking and weatherstripping can seal against the ants.

Baits

• Baits contain an ant food source combined with a slow-acting poison. The ants carry the tainted food source back to the nest, where it infects and destroys the rest of the colony. Most baits are not waterproof. Moisture ruins the food source or dissolves it completely. Enclosed traps provide some moisture protection to the poisoned bait, so are better suited for use outdoors. These enclosed traps still require frequent replacement under wet conditions as moisture will eventually penetrate to the interior of the trap.