A two-pack of Off! Deep Woods Insect Repellent Bug Spray drops from $13.46 to $11.59 at Amazon. Each four-ounce spray is normally around $8, so it would normally cost you around $16 to buy two! This bug spray is known as one of the best-performing mosquito repellents and is made with 25% DEET. If you want a DEET-free option, we recommend the Off! Family Care Bug Spray which is on sale for even less. Shipping is free for Amazon Prime members or when you spend more than $25. Otherwise, it starts at $6.99.