You can try those insecticides that contains pyrethrin, an organic based insecticides produced by a flower. Just read the label. Please describe the insects look.
Yes. They are made from the oils or something in the seed of the chrysanthemum. I know they have many pyrethrin based insecticides on the market, and most of us use them with our birds, but for inside the house, they can be toxic and caue problems. It can be bad for humans and other pets, and especially fish, if you have fish tanks. For inside, I would use the seven dust, that Charis has suggested. I was breeding mealworms a while back, and got mites in the house, in the room where I kept the worms. This can happen, as the sometimes come in on the chicken mash that I used as bedding for the worms. I used the sevin dust, as recomended to me by a friend who raises chickens. It worked great. I'd use that in the house. Sprinkle on the carpet where they are getting in. The spray or the dust both work. It's just that I normally use the dust.
THIS FROM AN ARTICLE ONLINE FROM WIKIPEDIA:
4 External links
[edit] Toxicity
Pyrethrins are used in many varieties of insecticide, fogging products and in some pet products. Care should be taken when using this substance around humans and animals. Overdose and toxicity can result in a variety of symptoms, especially in pets, including drooling, lethargy, muscle tremors, vomiting, seizures and death.[5] Toxicity symptoms in humans include asthmatic breathing, sneezing, nasal stuffiness, headache, nausea, incoordination, tremors, convulsions, facial flushing and swelling, and burning and itching sensation.[6].
Pyrethrin is extremely toxic to aquatic life, such as bluegill and lake trout while it is slightly toxic to bird species, such as mallards. Toxicity increases with higher water temperatures and acidity. Natural pyrethrins are highly fat soluble, but are easily degraded and thus do not accumulate in the body. These compounds are toxic to bees also.[7]
http://en.wikipedia.org/wiki/Pyrethrin