Make sure the strips are yellow. They love yellow. Shake the plant they will fly off and hopefully into your traps.
I'd look up a natural way to remove them cause these strips will just get the adults. You need to get something in the soil to kill the larva. And you shouldn't use insecticides no matter how safe on a flowering plant.
I've heard of organic sprays being made with garlic and soap. I wouldn't use that.
I've also heard of mixing earthworm castings into the top layer of soil and turning it around a bit and then watering as usual. This sounds like the safest and most people use castings in their soil anyways, maybe this is the reason?
Definitely control their population with the yellow strips.