I have caught thousands of Japanese Beetles every year in the plastic catchers with the screw top and sex lures. they just drop in. Today I checked them and they were both filled and overflowing. So I filled a bucket (5 gal) 1/2 full with water, unscrew the top and dump down into the water. I hose the inside of the catcher and dump also into the bucket and reset the traps. Then I cover the 5 gallon buckets with lids until morning. I did give them a couple hundred (I have 5 girls LI Reds and Barred Rocks). They chowed down and then seemed to get sick of them. But there is enough for treats for the rest of the week. I am hoping it doesn't affect their eggs. I let them out of their 25 x 25 foot pen to scour the yard and they head for the garden and my compost pile (everything in there is organic scraps, soil and mulch). They totally turn the compost pile for me. Then back to their yard for the night and into their coop. Life is good with chickens!. The guineas are not as interested in the JB's.