About 2 weeks ago I made a compost bin out of a plastic trash can with a lid on it. All I done was used a 5/8ths spade bit and drilled several holes in the bottom and then placed the bin upon two split tree logs about 2' long and spread apart so the bin could get air underneath. I placed in the bin about a gazillion zuchinni squash that I picked out of the garden and couldn't give away. To this I added a ton of dried lawn clippings and filled the bin to the top. Since then every few days I add any kitchen vegetable waste that we accumulate. This morning I opened it to add more kitchen waste and to turn the compost and their is about a quadzillion white grub larvaes all in it and the bin is now only about 1/3 full. Is this normal? Are the big larvaes suppose to be in there? Am I doing this right? Also, I have this bin placed outside next to the kitchen entrance so it would be convenient to dump waste in. Will these larva's start crawling inside my house? Should I relocate to keep them from in the house?