How to store lentils without bugs or insects

How to store lentils without the insects for a longer time: Saving lentils like toor dal, Chana dal etc would be a great headache for the ladies that too who stay outside India. Because our mother and inlaws give the lentils in a large quantity and saving them from the black small bugs or insects is a problem. Finally we need to throw the whole packets out. 

No need to worry now. Just follow the simple tips here and try to store the lentils for a longer time. 

Tip 1: Add little castor oil to the lentils like toor dal and mix well. It helps to keep away the insects like small black ones. 

Tip 2: Add few neem leaves or dry red chillies along with the lentils and save in a air tight container. 

Tip 3: Transfer the lentils to a freezer safe containers and you can keep it in the freezer. Whenever you want you can take small amount. 

Tip 4: Add little turmeric powder and mix with the lentils. 

Tip 5: If buying in very large quantity, mix the lentils with boric powder. But take care to wash them very nicely before using it. 

Note:

1. Always try to buy the fresh or recently packed lentils. If the lentil packet has little powder like stuff, discard it. 

2. Always use a clean and dry spoon. Any moisture content may bring in the insects. 

So do you follow any other tips in storing the lentils away from bugs??? Share with me.