Okay the fleas have built an immunity. To frontlines of pestcides. I prefer none chemical means that have survived the ages. Ground to powder mineral fossil works amazingly. U can use it for so much stuff. Just sprinkle a goods amount and keep it up. After 4days the fleas will begin to find that there outer shell has disentagrated now they die a slow death of dehydration. Its all natural. It can be found at health food stores or nurseries. Also u can mix it in the food and fight off internal parasites! My brother bear is happier and healhier. Up the mysteries of the natual world!
