Best Ways to Eliminate Scale Insects on Houseplants?

Dealing with scale is super frustrating! For the plants I managed to save, I wiped every leaf—both top and bottom—with rubbing alcohol using a Q-tip. It's a tedious process, but it works. I also use bonide granules and neem oil. If I face another infestation, I might put the plant in a bag with one of those hanging insect killers or even submerge it in water for a day. Just watch out; sometimes the treatment can stress the plant even more.

I've had my share of struggles with scale on my umbrella plant. Initially, I tried the alcohol and Q-tip method, but they kept coming back. The trick that finally worked for me was filling a spray bottle with alcohol and giving every inch of my plant a good soaking every other day for two weeks. I haven't seen any scale since! Just a heads up, I also tried taking cuttings and soaking them in soapy water, but they came back too, so stick to spraying! Just be careful not to damage the plant with the alcohol.

If you have access to bonide systemic granules, that’s one of the easiest ways to tackle scale. Just a heads up, it’s pretty toxic, so keep kids and pets away from it for about eight weeks after using. If you want to go manual, start with the alcohol-soaked Q-tip for any visible scale you can find. After that, treating with something like dead bug brew every four days can help until you go a couple of weeks without seeing any more pests.

I prefer to manually scrape the scale off and then give the whole plant a soapy shower to wash away anything that might stick around. It helps to do this a few times until you’re sure they’re gone. I also recommend repotting in fresh soil after the last shower to ensure there’s nothing hiding out in the dirt. The success of this really depends on how big your plant is and how soon you noticed the infestation.