Controls pests up to 4 weeks, giving horses long-lasting protection, even when other fly sprays do not. Ideal for horses, ponies, dogs or dog premises; this broad application allows animal owners to use one product. Controls mosquitoes and protects against mosquitoes that may transmit west nile virus. with permethrin, this product has proven to be an excellent killer of insects, and has longer residual activity than others. Size is 1 Quart/2 Pack. Dimensions are 3.25 X 9.5 X 10.75 UPC Code = 095668934040