As the title of my review suggests, please don't waste your money on this product. I bought this for Xmas for my 6 year old who had been entranced by the adverts on the TV for this toy. As always reality and advertising are poles apart. The thing just doesn't work and has no hope of ever functioning properly and the manufacturers are laughing all the way to the bank. Basically it is expected that 4 x D type batteries will power a heating unit to dissolve the plastic "bug eggs" into a sludge that will fill the bug moulds. It takes 15 minutes per set of 2 eggs and 2 isn't enough to fill a mould, so by the time you have dissolved another the sludge already in the mould has hardened and refuses to allow any more sludge into it - Result = half made bug! The instructions state to replace the batteries every time you use the unit - Hey No surprise there Sherlock 15-30 mins of 4 batteries trying to heat up this damn sludge means you'll need a second mortgage to fund the battery mountain you're gonna need. What was most disappointing was this was the toy that my son had written at the top of his list to Santa and when he opened it up his face was priceless,however, this was short lived once we tried to play with it and was replaced by tears, frustration and a 6 yr old deciding that he would never be duped by adverts again. I can't stress enough DO NOT BUY THIS TOY, unless you want upset, cynicism and Bah humbug in your house!