Black Flag Spider and Scorpion Killer, Aerosol, 16-oz

Been using this stuff for years. I buy it locally at different stores as well as ordering it through Amazon. I like to have backups so it's available when I need it. I believe this kills inside the spider egg sac, and that's the reason I buy this one. I can't remember offhand if it's this one or the raid, but I think it's this one, and that's very important to me. This stuff just works. It's good, and it works, and that, besides the spider egg sac thing, is the most important thing! It's got a great shooting arc, and I only use it in the garage. I think it'd be way too messy to use inside. I love that it's foam so you can see it.

There are several spider seasons of the year when they invade our homes looking for safe places to hide from rain or heat. They also look for dark musty places to best, ughhhh. I have a can of black flag in my garage and by my front door. Some spiders can be deadly I don't have time to wait to find out which one. Black flag works quick and efficiently. Other sprays let them crawl away, a couple Shots of black flag and movement stops. Very easy to use, doesn't take an expert, just aim and spray. I love it.

Works

This stuff does kill spiders. Black Widows, which are notoriously tough, struggle and fight for a minute or two - but eventually they die. My only problem with this product is that the stream is extremely aggressive. It comes out hard, tightly streamed, and in mass volume. For comparison, Hot Shot brand spider killer is the exact same active ingredients, and you get about 25% less volume with the Hot Shot, for about 25% less money. But the 11 oz. Hot Shot actually covers a lot more area, because it comes out in more of a fog, less of a stream. If you are gunning at a speeding spider or scorpion, then maybe you need the intense stream of the Black Flag. But, if you are treating an area, then I think the Hot Shot is the better option. Again, both products are the exact same active ingredients. If you like to mix up insect killers to prevent species resistance, know that the Terra brand uses different ingredients. I took off one star, because you really can't treat large areas cost effectively with a stream this aggressive. And for my needs, the Hot Shot "fog" is satisfactory for spot killing. If you are just picking off speedy pests on the spot, then this might be your best option. If you are primarily area treating or spot killing bugs of the non-speedy variety, then go with the Hot Shot or Terra. I can't offer any perspective on the effectiveness against scorpions,....only spiders.

After building a barndominium, I noticed several scorpions had entered through a poorly sealed water pipe. Now sealed, there remains the scorpions that had already entered. Upon finding them, I've been able to spray/kill/remove them. This spray works well!