I am building my pigs a new cage, it is wood based/grid, thanks to my local flooring store I have a huge scrap piece of vinyl to cover the base of the cage. I want to paint it, my 3 year old will want to help, even though the pigs won't come in direct contact with the wood/paint I want to make sure it is safe for them. What should I look for when selecting a paint? A certain brand, will no-toxic work?